thumbtack

US /ˈθʌm.tæk/
UK /ˈθʌm.tæk/
"thumbtack" picture
1.

a short, flat-headed pin used to fasten papers or other light items to a wall or board

:
•
She used a thumbtack to pin the notice to the bulletin board.
•
Be careful not to step on any loose thumbtacks.
:
pushpindrawing pin
1.

to fasten with a thumbtack

:
•
Please thumbtack this poster to the wall.
•
He thumbtacked the note to the corkboard.
:
pinfastenattach