The Collaborative International Dictionary of English v.0.48:

Pine \Pine\, n. [AS. p[imac]n, L. pinus.]
   1. (Bot.) Any tree of the coniferous genus Pinus. See
      Pinus.
      [1913 Webster]

   Note: There are about twenty-eight species in the United
         States, of which the white pine (Pinus Strobus),
         the Georgia pine (Pinus australis), the red pine
         (Pinus resinosa), and the great West Coast sugar
         pine (Pinus Lambertiana) are among the most
         valuable. The Scotch pine or fir, also called
         Norway or Riga pine (Pinus sylvestris), is the
         only British species. The nut pine is any pine tree,
         or species of pine, which bears large edible seeds. See
         Pinon.
         [1913 Webster] The spruces, firs, larches, and true
         cedars, though formerly considered pines, are now
         commonly assigned to other genera.
         [1913 Webster]

   2. The wood of the pine tree.
      [1913 Webster]

   3. A pineapple.
      [1913 Webster]

   Ground pine. (Bot.) See under Ground.

   Norfolk Island pine (Bot.), a beautiful coniferous tree,
      the Araucaria excelsa.

   Pine barren, a tract of infertile land which is covered
      with pines. [Southern U.S.]

   Pine borer (Zool.), any beetle whose larv[ae] bore into
      pine trees.

   Pine finch. (Zool.) See Pinefinch, in the Vocabulary.

   Pine grosbeak (Zool.), a large grosbeak (Pinicola
      enucleator), which inhabits the northern parts of both
      hemispheres. The adult male is more or less tinged with
      red.

   Pine lizard (Zool.), a small, very active, mottled gray
      lizard (Sceloporus undulatus), native of the Middle
      States; -- called also swift, brown scorpion, and
      alligator.

   Pine marten. (Zool.)
      (a) A European weasel (Mustela martes), called also
          sweet marten, and yellow-breasted marten.
      (b) The American sable. See Sable.

   Pine moth (Zool.), any one of several species of small
      tortricid moths of the genus Retinia, whose larv[ae]
      burrow in the ends of the branchlets of pine trees, often
      doing great damage.

   Pine mouse (Zool.), an American wild mouse (Arvicola
      pinetorum), native of the Middle States. It lives in pine
      forests.

   Pine needle (Bot.), one of the slender needle-shaped leaves
      of a pine tree. See Pinus.

   Pine-needle wool. See Pine wool (below).

   Pine oil, an oil resembling turpentine, obtained from fir
      and pine trees, and used in making varnishes and colors.


   Pine snake (Zool.), a large harmless North American snake
      (Pituophis melanoleucus). It is whitish, covered with
      brown blotches having black margins. Called also bull
      snake. The Western pine snake (Pituophis Sayi) is
      chestnut-brown, mottled with black and orange.

   Pine tree (Bot.), a tree of the genus Pinus; pine.

   Pine-tree money, money coined in Massachusetts in the
      seventeenth century, and so called from its bearing a
      figure of a pine tree. The most noted variety is the pine
      tree shilling.

   Pine weevil (Zool.), any one of numerous species of weevils
      whose larv[ae] bore in the wood of pine trees. Several
      species are known in both Europe and America, belonging to
      the genera Pissodes, Hylobius, etc.

   Pine wool, a fiber obtained from pine needles by steaming
      them. It is prepared on a large scale in some of the
      Southern United States, and has many uses in the economic
      arts; -- called also pine-needle wool, and pine-wood
      wool.
      [1913 Webster]

WordNet (r) 3.0 (2006):

pine tree
    n 1: a coniferous tree [syn: pine, pine tree, true pine]

Easton's 1897 Bible Dictionary:

Pine tree
   Heb. tidhar, mentioned along with the fir-tree in Isa. 41:19;
   60:13. This is probably the cypress; or it may be the
   stone-pine, which is common on the northern slopes of Lebanon.
   Some suppose that the elm, others that the oak, or holm, or
   ilex, is meant by the Hebrew word. In Neh. 8:15 the Revised
   Version has "wild olive" instead of "pine." (See FIR.)