cloud /ˈklaʊd/
  雲,憂色,雲狀的煙,糢糊(vt.)以雲遮敝,籠罩,使黯然(vi.)烏雲密布,陰沈
  Cloud v. t. [imp. & p. p. Clouded; p. pr. & vb. n. Clouding.]
  1. To overspread or hide with a cloud or clouds; as, the sky is clouded.
  2. To darken or obscure, as if by hiding or enveloping with a cloud; hence, to render gloomy or sullen.
  One day too late, I fear me, noble lord,
  Hath clouded all thy happy days on earth.   --Shak.
     Be not disheartened, then, nor cloud those looks.   --Milton.
     Nothing clouds men's minds and impairs their honesty like prejudice.   --M. Arnold.
  3. To blacken; to sully; to stain; to tarnish; to damage; -- esp. used of reputation or character.
  I would not be a stander-by to hear
  My sovereign mistress clouded so, without
  My present vengeance taken.   --Shak.
  4. To mark with, or darken in, veins or sports; to variegate with colors; as, to cloud yarn.
     And the nice conduct of a clouded cane.   --Pope.
  Cloud n.
  1. A collection of visible vapor, or watery particles, suspended in the upper atmosphere.
     I do set my bow in the cloud.   --Gen. ix. 13.
  Note: ☞ A classification of clouds according to their chief forms was first proposed by the meteorologist Howard, and this is still substantially employed. The following varieties and subvarieties are recognized: (a) Cirrus. This is the most elevated of all the forms of clouds; is thin, long-drawn, sometimes looking like carded wool or hair, sometimes like a brush or room, sometimes in curl-like or fleecelike patches. It is the cat's-tail of the sailor, and the mare's-tail of the landsman. (b) Cumulus. This form appears in large masses of a hemispherical form, or nearly so, above, but flat below, one often piled above another, forming great clouds, common in the summer, and presenting the appearance of gigantic mountains crowned with snow. It often affords rain and thunder gusts. (c) Stratus. This form appears in layers or bands extending horizontally. (d) Nimbus. This form is characterized by its uniform gray tint and ragged edges; it covers the sky in seasons of continued rain, as in easterly storms, and is the proper rain cloud. The name is sometimes used to denote a raining cumulus, or cumulostratus. (e) Cirro-cumulus. This form consists, like the cirrus, of thin, broken, fleecelice clouds, but the parts are more or less rounded and regulary grouped. It is popularly called mackerel sky. (f) Cirro-stratus. In this form the patches of cirrus coalesce in long strata, between cirrus and stratus. (g) Cumulo-stratus. A form between cumulus and stratus, often assuming at the horizon a black or bluish tint. -- Fog, cloud, motionless, or nearly so, lying near or in contact with the earth's surface. -- Storm scud, cloud lying quite low, without form, and driven rapidly with the wind.
  2. A mass or volume of smoke, or flying dust, resembling vapor. “A thick cloud of incense.”
  3. A dark vein or spot on a lighter material, as in marble; hence, a blemish or defect; as, a cloud upon one's reputation; a cloud on a title.
  4. That which has a dark, lowering, or threatening aspect; that which temporarily overshadows, obscures, or depresses; as, a cloud of sorrow; a cloud of war; a cloud upon the intellect.
  5. A great crowd or multitude; a vast collection. “So great a cloud of witnesses.”
  6. A large, loosely-knitted scarf, worn by women about the head.
  Cloud on a (or the) title Law, a defect of title, usually superficial and capable of removal by release, decision in equity, or legislation.
  To be under a cloud, to be under suspicion or in disgrace; to be in disfavor.
  In the clouds, in the realm of facy and imagination; beyond reason; visionary.
  Cloud, v. i. To grow cloudy; to become obscure with clouds; -- often used with up.
     Worthies, away! The scene begins to cloud.   --Shak.
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  cloud
       n 1: any collection of particles (e.g., smoke or dust) or gases
            that is visible
       2: a visible mass of water or ice particles suspended at a
          considerable altitude
       3: out of touch with reality; "his head was in the clouds"
       4: a cause of worry or gloom or trouble; "the only cloud on the
          horizon was the possibility of dissent by the French"
       5: suspicion affecting your reputation; "after that mistake he
          was under a cloud"
       6: a group of many insects; "a swarm of insects obscured the
          light"; "a cloud of butterflies" [syn: swarm]
       v 1: make overcast or cloudy; "Fall weather often overcasts our
            beaches" [syn: overcast] [ant: clear up]
       2: make less visible or unclear; "The stars are obscured by the
          clouds" [syn: obscure, befog, becloud, obnubilate,
           haze over, fog, mist]
       3: billow up in the form of a cloud; "The smoke clouded above
          the houses"
       4: make gloomy or depressed; "Their faces were clouded with
          sadness"
       5: place under suspicion or cast doubt upon; "sully someone's
          reputation" [syn: defile, sully, corrupt, taint]
       6: colour with streaks or blotches of different shades [syn: mottle,
           dapple]
       7: make milky or dull; "The chemical clouded the liquid to
          which it was added"
  Cloud
     The Hebrew so rendered means "a covering," because clouds cover
     the sky. The word is used as a symbol of the Divine presence, as
     indicating the splendour of that glory which it conceals (Ex.
     16:10; 33:9; Num. 11:25; 12:5; Job 22:14; Ps. 18:11). A "cloud
     without rain" is a proverbial saying, denoting a man who does
     not keep his promise (Prov. 16:15; Isa. 18:4; 25:5; Jude 1:12).
     A cloud is the figure of that which is transitory (Job 30:15;
     Hos. 6:4). A bright cloud is the symbolical seat of the Divine
     presence (Ex.29:42, 43; 1 Kings 8:10; 2 Chr. 5:14; Ezek. 43:4),
     and was called the Shechinah (q.v.). Jehovah came down upon
     Sinai in a cloud (Ex. 19:9); and the cloud filled the court
     around the tabernacle in the wilderness so that Moses could not
     enter it (Ex. 40:34, 35). At the dedication of the temple also
     the cloud "filled the house of the Lord" (1 Kings 8:10). Thus in
     like manner when Christ comes the second time he is described as
     coming "in the clouds" (Matt. 17:5; 24:30; Acts 1:9, 11). False
     teachers are likened unto clouds carried about with a tempest (2
     Pet. 2:17). The infirmities of old age, which come one after
     another, are compared by Solomon to "clouds returning after the
     rain" (Eccl. 12:2). The blotting out of sins is like the sudden
     disappearance of threatening clouds from the sky (Isa. 44:22).
       Cloud, the pillar of, was the glory-cloud which indicated
     God's presence leading the ransomed people through the
     wilderness (Ex. 13:22; 33:9, 10). This pillar preceded the
     people as they marched, resting on the ark (Ex. 13:21; 40:36).
     By night it became a pillar of fire (Num. 9:17-23).