quillback

[ kwil-bak ]
/ ˈkwɪlˌbæk /

noun, plural quill·backs, (especially collectively) quill·back.

a carpsucker, Carpiodes cyprinus, inhabiting waters in the central and eastern U.S., having one ray of the dorsal fin greatly elongated.

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anchorite
Also called quillback carpsucker.

Origin of quillback

An Americanism dating back to 1880–85; quill + back1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020