gum /ˈgəm/ 名詞
Gum, v. i. To exude or form gum; to become gummy.
Gum, v. t. [imp. & p. p. Gummed p. pr. & vb. n. Gumming.]
1. To smear with gum; to close with gum; to unite or stiffen by gum or a gumlike substance; to make sticky with a gumlike substance.
He frets like a gummed velvet. --Shak.
Gum n. The dense tissues which invest the teeth, and cover the adjacent parts of the jaws.
Gum rash Med., strophulus in a teething child; red gum.
Gum stick, a smooth hard substance for children to bite upon while teething.
Gum, v. t. To deepen and enlarge the spaces between the teeth of (a worn saw). See Gummer.
1. A vegetable secretion of many trees or plants that hardens when it exudes, but is soluble in water; as, gum arabic; gum tragacanth; the gum of the cherry tree. Also, with less propriety, exudations that are not soluble in water; as, gum copal and gum sandarac, which are really resins.
2. Bot. See Gum tree, below.
3. A hive made of a section of a hollow gum tree; hence, any roughly made hive; also, a vessel or bin made of a hollow log. [Southern U. S.]
4. A rubber overshoe. [Local, U. S.]
Black gum, Blue gum, British gum, etc. See under Black, Blue, etc.
Gum Acaroidea, the resinous gum of the Australian grass tree (Xanlhorrhœa).
Gum animal Zool., the galago of West Africa; -- so called because it feeds on gums. See Galago.
Gum animi or animé. See Animé.
Gum arabic, a gum yielded mostly by several species of Acacia (chiefly A. vera and A. Arabica) growing in Africa and Southern Asia; -- called also gum acacia. East Indian gum arabic comes from a tree of the Orange family which bears the elephant apple.
Gum butea, a gum yielded by the Indian plants Butea frondosa and B. superba, and used locally in tanning and in precipitating indigo.
Gum cistus, a plant of the genus Cistus (Cistus ladaniferus), a species of rock rose.
Gum dragon. See Tragacanth.
Gum elastic, Elastic gum. See Caoutchouc.
Gum elemi. See Elemi.
Gum juniper. See Sandarac.
Gum kino. See under Kino.
Gum lac. See Lac.
Gum Ladanum, a fragrant gum yielded by several Oriental species of Cistus or rock rose.
Gum passages, sap receptacles extending through the parenchyma of certain plants (Amygdalaceæ, Cactaceæ, etc.), and affording passage for gum.
Gum pot, a varnish maker's utensil for melting gum and mixing other ingredients.
Gum resin, the milky juice of a plant solidified by exposure to air; one of certain inspissated saps, mixtures of, or having properties of, gum and resin; a resin containing more or less mucilaginous and gummy matter.
Gum sandarac. See Sandarac.
Gum Senegal, a gum similar to gum arabic, yielded by trees (Acacia Verek and A. Adansoniä) growing in the Senegal country, West Africa.
Gum tragacanth. See Tragacanth.
Gum water, a solution of gum, esp. of gum arabic, in water.
Gum wood, the wood of any gum tree, esp. the wood of the Eucalyptus piperita, of New South Wales.
n 1: a preparation (usually made of sweetened chicle) for chewing
[syn: chewing gum]
2: the tissue (covered by mucous membrane) of the jaws that
surrounds the bases of the teeth [syn: gingiva]
3: any of various substances (soluble in water) that exude from
certain plants; they are gelatinous when moist but harden
4: cement consisting of a sticky substance that is used as an
adhesive [syn: glue, mucilage]
5: wood or lumber from any of various gum trees especially the
sweet gum [syn: gumwood]
6: any of various trees of the genera Eucalyptus or Liquidambar
or Nyssa that are sources of gum [syn: gum tree]
v 1: grind with the gums; chew without teeth and with great
difficulty; "the old man had no teeth left and mumbled
his food" [syn: mumble]
2: exude or form gum; "these trees gum in the Spring"
[also: gumming, gummed]