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tack

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verb tack pronunciation in British English /tæk/ 
Word Forms
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present tense
I/you/we/theytack
he/she/ittacks
present participletacking
past tensetacked
past participletacked
  1. 1
    [transitive] to fix something somewhere with a small nail

    The wooden strips have to be tacked down.

    1. a.
      to pin something such as a piece of paper on a wall or board etc

      She tacked up the photograph on the bulletin board.

phrasal verbs

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used with other nouns to describe the unexpected and often unwanted effects of a particular situation or trend

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