"clasp, hook, fastener," 1296, from O.N.Fr.
taque "nail, pin, peg," probably from a Gmc. source (cf. M.Du.
tacke "twig, spike," Low Ger.
takk "tine, pointed thing," Ger.
Zacken "sharp point, tooth, prong"); perhaps related to
tail. Meaning "small, sharp nail with a flat head" is attested from 1463. Verb sense of "to attach as a supplement" (with suggestion of hasty or arbitrary proceeding) is attested from 1683. The meaning "rope to hold the corner of a sail in place" is first recorded 1481; hence the verb meaning "sail into the wind," first recorded 1557, which lead to the fig. sense of "course or line of conduct or action" (1675).