wee·​ver | \ ˈwēvə(r)\
variants: or less commonly weever fish or weaver
plural -s

Definition of weever

: any of several edible marine fishes of the family Trachinidae that have a broad spinose head with the eyes looking upward and a long dorsal fin supported by many strong sharp venomous spines that cause painful wounds: such as
a : a British weever (Trachinus draco) that becomes a foot long

called also greater weever

b : a British weever (T. vipera) that is about half as large

called also lesser weever

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History and Etymology for weever

Old North French wivre viper

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