The Collaborative International Dictionary of English v.0.48:

Bush \Bush\ (b[.u]sh), n. [OE. bosch, busch, buysch, bosk, busk;
   akin to D. bosch, OHG. busc, G. busch, Icel. b[=u]skr,
   b[=u]ski, Dan. busk, Sw. buske, and also to LL. boscus,
   buscus, Pr. bosc, It. bosco, Sp. & Pg. bosque, F. bois, OF.
   bos. Whether the LL. or G. form is the original is uncertain;
   if the LL., it is perh. from the same source as E. box a
   case. Cf. Ambush, Boscage, Bouquet, Box a case.]
   1. A thicket, or place abounding in trees or shrubs; a wild
      forest.
      [1913 Webster]

   Note: This was the original sense of the word, as in the
         Dutch bosch, a wood, and was so used by Chaucer. In
         this sense it is extensively used in the British
         colonies, especially at the Cape of Good Hope, and also
         in Australia and Canada; as, to live or settle in the
         bush.
         [1913 Webster]

   2. A shrub; esp., a shrub with branches rising from or near
      the root; a thick shrub or a cluster of shrubs.
      [1913 Webster]

            To bind a bush of thorns among sweet-smelling
            flowers.                              --Gascoigne.
      [1913 Webster]

   3. A shrub cut off, or a shrublike branch of a tree; as,
      bushes to support pea vines.
      [1913 Webster]

   4. A shrub or branch, properly, a branch of ivy (as sacred to
      Bacchus), hung out at vintners' doors, or as a tavern
      sign; hence, a tavern sign, and symbolically, the tavern
      itself.
      [1913 Webster]

            If it be true that good wine needs no bush, 't is
            true that a good play needs no epilogue. --Shak.
      [1913 Webster]

   5. (Hunting) The tail, or brush, of a fox.
      [1913 Webster]

   To beat about the bush, to approach anything in a
      round-about manner, instead of coming directly to it; -- a
      metaphor taken from hunting.

   Bush bean (Bot.), a variety of bean which is low and
      requires no support (Phaseolus vulgaris, variety nanus).
      See Bean, 1.

   Bush buck, or Bush goat (Zool.), a beautiful South
      African antelope (Tragelaphus sylvaticus); -- so called
      because found mainly in wooden localities. The name is
      also applied to other species.

   Bush cat (Zool.), the serval. See Serval.

   Bush chat (Zool.), a bird of the genus Pratincola, of the
      Thrush family.

   Bush dog. (Zool.) See Potto.

   Bush hammer. See Bushhammer in the Vocabulary.

   Bush harrow (Agric.) See under Harrow.

   Bush hog (Zool.), a South African wild hog
      (Potamoch[oe]rus Africanus); -- called also bush pig,
      and water hog.

   Bush master (Zool.), a venomous snake (Lachesis mutus) of
      Guinea; -- called also surucucu.

   Bush pea (Bot.), a variety of pea that needs to be bushed.


   Bush shrike (Zool.), a bird of the genus Thamnophilus,
      and allied genera; -- called also batarg. Many species
      inhabit tropical America.

   Bush tit (Zool.), a small bird of the genus Psaltriparus,
      allied to the titmouse. Psaltriparus minimus inhabits
      California.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bush \Bush\, v. t.
   To furnish with a bush, or lining; as, to bush a pivot hole.
   [1913 Webster] bush baby

The Collaborative International Dictionary of English v.0.48:

Bush \Bush\ (b[.u]sh), v. i.
   To branch thickly in the manner of a bush. "The bushing
   alders." --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bush \Bush\, v. t. [imp. & p. p. Bushed (b[.u]sht); p. pr. &
   vb. n. Bushing.]
   1. To set bushes for; to support with bushes; as, to bush
      peas.
      [1913 Webster]

   2. To use a bush harrow on (land), for covering seeds sown;
      to harrow with a bush; as, to bush a piece of land; to
      bush seeds into the ground.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bush \Bush\, n. [D. bus a box, akin to E. box; or F. boucher to
   plug.]
   1. (Mech.) A lining for a hole to make it smaller; a thimble
      or ring of metal or wood inserted in a plate or other part
      of machinery to receive the wear of a pivot or arbor.
      --Knight.
      [1913 Webster]

   Note: In the larger machines, such a piece is called a box,
         particularly in the United States.
         [1913 Webster]

   2. (Gun.) A piece of copper, screwed into a gun, through
      which the venthole is bored. --Farrow.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bush
    adj 1: not of the highest quality or sophistication [syn: bush-
           league, bush]
    n 1: a low woody perennial plant usually having several major
         stems [syn: shrub, bush]
    2: a large wilderness area
    3: dense vegetation consisting of stunted trees or bushes [syn:
       scrub, chaparral, bush]
    4: 43rd President of the United States; son of George Herbert
       Walker Bush (born in 1946) [syn: Bush, George Bush,
       George W. Bush, George Walker Bush, President Bush,
       President George W. Bush, Dubyuh, Dubya]
    5: United States electrical engineer who designed an early
       analogue computer and who led the scientific program of the
       United States during World War II (1890-1974) [syn: Bush,
       Vannevar Bush]
    6: vice president under Reagan and 41st President of the United
       States (born in 1924) [syn: Bush, George Bush, George
       H.W. Bush, George Herbert Walker Bush, President Bush]
    7: hair growing in the pubic area [syn: pubic hair, bush,
       crotch hair]
    v 1: provide with a bushing