1. any of a family (Clupeidae, order Clupeiformes) of soft-finned, bony fishes, as herring or sardines
2. of this family of fishes
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'clupeid'
< ModL Clupea
(< L clupea
, kind of small river fish) + -id