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- 2 [no object] Sailing change course by turning a boat’s head into and through the wind. Compare with wear2.[from the practice of shifting ropes (1sense 5 of the noun) in Oxford Dictionaries (US English)">1sense 5 of the noun) to change direction]
Middle English (in the general sense 'something that fastens one thing to another'): probably related to Old French tache 'clasp, large nail'