[ kil-ee-fish ]
/ 藞k瑟l i藢f瑟蕛 /
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noun, plural (especially collectively) kil路li路fish, (especially referring to two or more kinds or species) kil路li路fish路es.
any of several small, oviparous cyprinodont fishes, especially of the genus Fundulus, found in salt, brackish, and fresh waters.
any of several livebearers.
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The rainy weather could not ________ my elated spirits on my graduation day.
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Also called kil路lie [kil-ee]. /藞k瑟l i/.
Compare least killifish.

Origin of killifish

1805鈥15, Americanism; perhaps kill2 + -i- (unexplained) + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2022

How to use killifish in a sentence

British Dictionary definitions for killifish

/ (藞k瑟l瑟藢f瑟蕛) /

noun plural -fish or -fishes
any of various chiefly American minnow-like cyprinodont fishes of the genus Fundulus and related genera, of fresh and brackish waters: used as aquarium fishes, to control mosquitoes, and as anglers' bait

Word Origin for killifish

C19: see kill 虏, fish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012