A clip (such as hair clip, paper clip, clothes-peg or clothespin, clasp).
Antag bettadnu sipit kōkkun?
Where did you place my hair clip?
To pin s.t. (between two movable parts of an instrument such as a hair clip, a clothes-peg, etc.), fasten s.t., clip s.t.
Fasten the clothes on the clothesline; the wind is strong.
We all fasten (our hair) when we go out.
I don’t know how to fasten (the hair) of my companion.