Source : Webster's Revised Unabridged Dictionary (1913)

Cucumber \Cu"cum*ber\ (k?`k?m-b?r, formerly kou"k?m-b?r), n.[OE.
   cucumer, cocumber, cucumber, fr. L. cucmis, gen. cucumeris;
   cf. OF. cocombre,F. concombre.] (Bot.)
   A creeping plant, and its fruit, of several species of the
   genus {Cucumis}, esp. {Cucumis sativus}, the unripe fruit of
   which is eaten either fresh or picked. Also, similar plants
   or fruits of several other genera. See below.

   {Bitter cucumber} (Bot.), the {Citrullus or Cucumis
      Colocynthis}. See {Colocynth}.

   {Cucumber beetle.} (Zo["o]l.)
   (a) A small, black flea-beetle ({Crepidodera cucumeris}),
       which destroys the leaves of cucumber, squash, and melon
       vines.
   (b) The squash beetle.

   {Cucumber tree}.
   (a) A large ornamental or shade tree of the genus {Magnolia}
       {(M. acuminata)}, so called from a slight resemblance of
       its young fruit to a small cucumber.
   (b) An East Indian plant ({Averrhoa Bilimbi}) which produces
       the fruit known as bilimbi.

   {Jamaica cucumber}, {Jerusalem cucumber}, the prickly-fruited
      gherkin ({Cucumis Anguria}).

   {Snake cucumber}, a species ({Cucumis flexuosus}) remarkable
      for its long, curiously-shaped fruit.

   {Squirting cucumber}, a plant ({Ecbalium Elaterium}) whose
      small oval fruit separates from the footstalk when ripe
      and expels its seeds and juice with considerable force
      through the opening thus made. See {Elaterium}.

   {Star cucumber}, a climbing weed ({Sicyos angulatus}) with
      prickly fruit.