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Webster 1913 Edition

Noun.

A kind of small coat.

(Naut.)

A swallow-tailed flag; a distinguishing pennant, used by cutters, yachts, and merchant vessels.

burgee ‎(plural burgees)

A flag, usually a broad tapering pennant, often with a swallowtail, flown by yachts to identify the owner's yacht club.
A kind of small coal used in furnaces.

a broad tapering pennant

Italian: guidone m (the usual translation of "club burgee" is "guidone sociale")