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tack up

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tack something up

to fasten something onto something with tacks. The drapes started to fall, so we tacked them up again. Please tack up these posters.

See also: tack, up

tack up

v.

1. To post something with or as if with a tack: I tacked up a poster of my favorite band. The teacher tacked the best students' essays up on the wall.

2. To outfit a horse with a harness and saddle: The cowboy tacked up the horse. We can take the horses out for a ride after you've tacked them up.

See also: tack, up