citrus tree

from WordNet (r) 3.0 (2006)

citrus tree
    n 1: any of numerous tropical usually thorny evergreen trees of
         the genus Citrus having leathery evergreen leaves and
         widely cultivated for their juicy edible fruits having
         leathery aromatic rinds [syn: {citrus}, {citrus tree}]

from The Collaborative International Dictionary of English v.0.48

Citrus \Cit"rus\ (s[i^]t"r[u^]s), n. [L., a citron tree.]
   1. (Bot.) A genus of trees including the orange, lemon, lime,
      tangerine, citron, grapefruit, etc., originally natives of
      southern Asia.
      [1913 Webster]

   2. (Bot.) any tree belonging to the genus {Citrus}, having
      leathery evergreen leaves and bearing a soft pulpy fruit
      covered by a thick skin; -- called also {citrus tree}.
      [PJC]

   3. (Bot.) the fruit of a tree belonging to the genus
      {Citrus}, having a thick shiny skin and a soft, sweet to
      tart pulp.
      [PJC]

from The Collaborative International Dictionary of English v.0.48

citrus tree \cit"rus tree`\ (s[i^]t"r[u^]s tr[=e]`), n. (Bot.)
   same as {citrus[2]}.
   [PJC]