Third-person singular simple present indicative form of tack.(verb)
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Use "tacks" in a sentence
"The Teasel was crashing to and fro, beating up in short tacks nearer and nearer to all those boats, and the road beyond them, where motor-buses were driving through the rain."
""Well, naturally you'll work it in short tacks and hug the English side pretty close.""
"These curls must have been fastened on with glue or tin tacks, one would think, for they never moved, however much she laughed or shook her head."