Definition of tack verb from the Oxford Advanced Learner's Dictionary

     

    tack

     verb
    verb
    BrE BrE//tæk//
     
    ; NAmE NAmE//tæk//
     
    Verb Forms present simple I / you / we / they tack
    BrE BrE//tæk//
     
    ; NAmE NAmE//tæk//
     
    he / she / it tacks
    BrE BrE//tæks//
     
    ; NAmE NAmE//tæks//
     
    past simple tacked
    BrE BrE//tækt//
     
    ; NAmE NAmE//tækt//
     
    past participle tacked
    BrE BrE//tækt//
     
    ; NAmE NAmE//tækt//
     
    -ing form tacking
    BrE BrE//ˈtækɪŋ//
     
    ; NAmE NAmE//ˈtækɪŋ//
     
     
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  1. 1[transitive] tack something + adv./prep. to fasten something in place with a tack or tacks synonym nail The carpet was tacked to the floor.
  2. 2[transitive] tack something (+ adv./prep.) to fasten pieces of cloth together temporarily with long loose stitches before sewing them finally She tacked the sleeve of the blouse into the armhole.
  3. 3[intransitive] (specialist) to change the direction of a sailing boat so that the wind blows onto the sails from the opposite side; to do this several times in order to travel in the direction that the wind is coming from
  4. Word Originverb Middle English (in the general sense ‘something that fastens one thing to another’): probably related to Old French tache ‘clasp, large nail’.Extra examples A poster was tacked to the wall with drawing pins. He tacked the carpet down. She tacked the hem up and then tried the dress on. She tacked the ribbon onto the shirt. The skirt was roughly tacked together. Phrasal Verbstack somethingon
See the Oxford Advanced American Dictionary entry: tack