Source : Webster's Revised Unabridged Dictionary (1913)

Aloe \Al"oe\ ([a^]l"n[-o]), n.; pl. {Aloes} (-[=o]z). [L.
   alo["e], Gr. 'alo`h, aloe: cf. OF. aloe, F. alo[`e]s.]
   1. pl. The wood of the agalloch. [Obs.] --Wyclif.

   2. (Bot.) A genus of succulent plants, some classed as trees,
      others as shrubs, but the greater number having the habit
      and appearance of evergreen herbaceous plants; from some
      of which are prepared articles for medicine and the arts.
      They are natives of warm countries.

   3. pl. (Med.) The inspissated juice of several species of
      aloe, used as a purgative. [Plural in form but
      syntactically singular.]

   {American aloe}, {Century aloe}, the agave. See {Agave}.

Source : WordNet®

aloes
     n : a purgative made from the leaves of aloe [syn: {bitter aloes}]