noun Coastal New England.
a silver and black killifish, Fundulus heteroclitus, found in fresh, brackish, and salt water along the Atlantic coast of the U.S.
Origin of mummichog
1780–90, Americanism; < Narragansett (E spelling) moamitteaũg
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019