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Webster 1913 Edition

(-băndˊ)

Noun.

A band for the breast. Specifically:

(Naut.)

A band of canvas, or a rope, fastened at both ends to the rigging, to support the man who heaves the lead in sounding.

breastband ‎(plural breastbands)

A strophium: a band worn around the breasts.
(nautical) A band of canvas, attached to a ship's rigging, that provides support for the man heaving the lead in heavy weather.