1. The nose of pliers used in dentistry for contouring and adjusting wrought or cast metal dental appliances. 2. Sometimes used to describe a b.-shaped anatomic structure. See rostrum. [L. beccus]
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(bēk) [Fr. bec] 1. the forward-projecting jaws of a bird, along with their leathery or horny covering. 2. something shaped like the beak of a bird. See also rostrum.Medical dictionary. 2011.