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alligatorfish

[al-i-gey-ter-fish]
noun, plural (especially collectively) al·li·ga·tor·fish, (especially referring to two or more kinds or species) al·li·ga·tor·fish·es.
  1. a slender marine fish, Aspidophoroides monopterygius, of Atlantic seas, having overlapping plates covering the body.
  2. any of several related fishes of the family Agonidae.
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Origin of alligatorfish

An Americanism dating back to 1765–75; alligator + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018