halfbeak

from WordNet (r) 3.0 (2006)

halfbeak
    n 1: tropical and subtropical marine and freshwater fishes
         having an elongated body and long protruding lower jaw

from The Collaborative International Dictionary of English v.0.48

Halfbeak \Half"beak`\ (h[aum]f"b[=e]k), n. (Zool.)
   Any slender, marine fish of the genus {Hemirhamphus}, or of
   the family {Hemiramphidae}, having an elongated protruding
   lower jaw; -- called also {balahoo}.
   [1913 Webster]