verb (used with object)
Examples from the Web for thumbtack
She took the miniature, thumbtack and all, from the wall, 183 and put it in her wrist bag.
Lay the stencil pattern in position and thumbtack it down to the cheese cloth and blotting paper.
If knives are used to cut out the design, thumbtack the leather before commencing.
The latter she suspended by a thumbtack beside the mirror of her bureau.
A thumbtack is inserted in the standard near the top to prevent the box from being lifted entirely from the base.The Boy Mechanic, Book 2|Various