thumb /ˈθʌm/
 拇指(vt.)以拇指撥弄,笨拙處理,弄壞,翻閱,作搭車手勢


 thumb /ˈθəm/ 名詞
 拇指


 thumb
 姆指


 Thumb n.  The short, thick first digit of the human hand, differing from the other fingers in having but two phalanges; the pollex. See Pollex.
    Upon his thumb he had of gold a ring.   --Chaucer.
 Thumb band, a twist of anything as thick as the thumb. --Mortimer.
 Thumb blue, indigo in the form of small balls or lumps, used by washerwomen to blue linen, and the like.
 Thumb latch, a door latch having a lever formed to be pressed by the thumb.
 Thumb mark. (a) The mark left by the impression of a thumb, as on the leaves of a book. --Longfellow. (b) The dark spot over each foot in finely bred black and tan terriers.
 Thumb nut, a nut for a screw, having wings to grasp between the thumb and fingers in turning it; also, a nut with a knurled rim for the same perpose.
 Thumb ring, a ring worn on the thumb. --Shak.
 Thumb stall. (a) A kind of thimble or ferrule of iron, or leather, for protecting the thumb in making sails, and in other work. (b) Mil. A buckskin cushion worn on the thumb, and used to close the vent of a cannon while it is sponged, or loaded.
 Under one's thumb, completely under one's power or influence; in a condition of subservience. [Colloq.]


 Thumb, v. t. [imp. & p. p. Thumbed p. pr. & vb. n. Thumbing ]
 1. To handle awkwardly.
 2. To play with the thumbs, or with the thumbs and fingers; as, to thumb over a tune.
 3. To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling; also, to cover with the thumb; as, to thumb the touch-hole of a cannon.
    He gravely informed the enemy that all his cards had been thumbed to pieces, and begged them to let him have a few more packs.   --Macaulay.


 Thumb, v. i. To play with the thumb or thumbs; to play clumsily; to thrum.

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 thumb
      n 1: the thick short innermost digit of the forelimb [syn: pollex]
      2: the part of a glove that provides a covering for the thumb
      3: a convex molding having a cross section in the form of a
         quarter of a circle or of an ellipse [syn: ovolo, {quarter
         round]
      v 1: travel by getting free rides from motorists [syn: hitchhike,
            hitch]
      2: look through a book or other written material; "He thumbed
         through the report"; "She leafed through the volume" [syn:
          flick, flip, riffle, leaf, riff]
      3: feel or handle with the fingers; "finger the binding of the
         book" [syn: finger]