Pric·kle·back Pric·kle·fish n. Zool. The stickleback.
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prickleback
n 1: small elongate fishes of shallow northern seas; a long
dorsal fin consists entirely of spines
2: small (2-4 inches) pugnacious mostly scaleless spiny-backed
fishes of northern fresh and littoral waters having
elaborate courtship; subjects of much research [syn: stickleback]