(simile, colloquial) very intelligent

(phonetics) The IPA diacritic of primary articulation: < ˕ >, used to denote a lowered phone; for vowels, the diacritic denotes a slightly more open utterance; for consonants, it moves the manner of articulation one step forward in this chain: nasal → plosive → fricative → approximant → trill → tap, flap → lateral fricative → lateral approximant → lateral flap.

(nautical) The act of tacking, turning into the wind so the sail moves to the opposite side. / (idiomatic) A reversal of an opinion.

simple past tense and past participle of Blu-Tack

Affixed with Blu-Tack.

To prepare a horse for riding by equipping it with tack (harness, reins, saddle etc.) / To attach in a temporary fashion.

An ornamented pin used to secure a necktie's end flat against the shirt, a stickpin.

plural of tie tack

(onomatopoeia) The sound of repeated tapping, knocking, or clicking. / (countable) A device used to tap on a window or door from a distance.

A forked tool with a handle, used for removing tacks.