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The Collaborative International Dictionary
Polewig

Polewig \Pole"wig\, n. [Cf. Polliwig.] (Zo["o]l.) The European spotted goby ( Gobius minutus); -- called also pollybait. [Prov. Eng.]

Wiktionary
polewig

alt. (context UK dialect obsolete English) The European spotted goby (''Gobius minutus''). n. (context UK dialect obsolete English) The European spotted goby (''Gobius minutus'').