Source : WordNet®

spearfish
     n 1: any of several large vigorous pelagic fishes resembling
          sailfishes but with first dorsal fin much reduced;
          worldwide but rare
     2: large long-jawed oceanic sport fishes; related to sailfishes
        and spearfishes; not completely cold-blooded i.e. able to
        warm their brains and eyes [syn: {marlin}]
     [also: {spearfishes} (pl)]

spearfishes
     See {spearfish}