Source : Webster's Revised Unabridged Dictionary (1913)

Jacamar \Jac"a*mar`\, n. [F. jacamar, Braz. jacamarica; cf. Sp.
   jacamar.] (Zo["o]l.)
   Any one of numerous species of tropical American birds of the
   genus {Galbula} and allied genera. They are allied to the
   kingfishers, but climb on tree trunks like nuthatches, and
   feed upon insects. Their colors are often brilliant.

Source : WordNet®

jacamar
     n : tropical American insectivorous bird having a long sharp
         bill and iridescent green or bronze plumage