A device to fasten goods by piercing or clasping
A piece of jewelry
A rod inserted through a prepared hole
I have only my cap to pin on.
It wasn't our turn to pin the tail on the donkey.
The only connexion between the type-wheel and the screwhead S is by the pin p (which is screwed into S), the cylindrical end of which acts in a slot cut in the typewheel.
She pulled on her top, buttoned it, and chose a pin from her jewelry box.
In the days that followed I learned to spell in this uncomprehending way a great many words, among them pin, hat, cup and a few verbs like sit, stand and walk.