An American dialectal term for the bowfin (Amia calva), a freshwater fish native to North America and regarded as a living fossil. The bowfin is known for its aggressive feeding habits and survival in low-oxygen water. 'Grindle' is a Southern and Midwestern dialectal name for this species.
The old-timer said grindles were thick in that stretch of river come summer.
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(US, dated, dialectal) A fish, the bowfin ().
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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