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From The Collaborative International Dictionary of English v.0.48:
Jacamar \Jac"a*mar`\, n. [F. jacamar, Braz. jacamarica; cf. Sp. jacamar.] (Zool.) 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. [1913 Webster]