The definition of a tack is a sharp pointed nail with a flat head.(noun)
An example of tack is what is used to hang things on a bulletin board.
Tack is defined as to fasten or secure something.(verb)
An example of to tack is to hang a picture on the wall.
See tack in Webster's New World College Dictionary
Origin: < ?food; foodstuff: hardtack
Origin: ME takke < MDu tacke, twig, point, akin to Ger zacke < ? IE base *dek-, to tear > tail
See tack in American Heritage Dictionary 4
Origin: Middle English tak, fastener
Origin: , from Old North French taque
Origin: , probably of Germanic origin.
Origin: Origin unknown.
Origin: Short for tackle.
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