Meaning of “tack” - Learner’s Dictionary

tack

noun uk us /tæk/
take/try a different tack

to try to deal with a problem in a different way:

I've tried being nice to her and it doesn't work so I might take a different tack.
NAIL [ C ]

a small, sharp nail with a flat top:

carpet tacks
PIN [ C ] US (UK drawing pin)

a short pin with a flat, round top, used for fastening pieces of paper to the wall

(Definition of “tack noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)