sword·fish /ˈsordˌfɪʃ, ˈsɔrd-/
  旗魚
  Sword·fish n.
  1. Zool. (a) A very large oceanic fish (Xiphias gladius), the only representative of the family Xiphiidae. It is highly valued as a food fish. The bones of the upper jaw are consolidated, and form a long, rigid, swordlike beak; the dorsal fin is high and without distinct spines; the ventral fins are absent. The adult is destitute of teeth. It becomes sixteen feet or more long. (b) The gar pike. (c) The cutlass fish.
  2. Astron. A southern constellation. See Dorado, 1.
  Swordfish sucker Zool., a remora (Remora brachyptera) which attaches itself to the swordfish.
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  swordfish
       n 1: flesh of swordfish usually served as steaks
       2: large toothless marine food fish with a long swordlike upper
          jaw; not completely cold-blooded i.e. they are able to
          warm their brains and eyes: worldwide in warm waters but
          feed on cold ocean floor coming to surface at night [syn:
          Xiphias gladius]
       [also: swordfishes (pl)]