Meanings
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Thesaurus
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Simplified etymology
Barnacle originally referred to the barnacle goose and appeared in English in the early Middle Ages, although its ultimate origin is unknown. Because the goose’s breeding grounds were once mysterious, people believed it hatched from the shellfish now called a barnacle, whose feathery filaments suggested plumage. The name was transferred to the shellfish in the late 16th century.
Etymology
From Old French barnacle ('species of goose'), via Middle English bernacle; originally a type of goose, later transferred to the marine crustacean owing to a mistaken belief about its life cycle.