Source : Webster's Revised Unabridged Dictionary (1913)

Clothespin \Clothes"pin`\ (? or ?), n.
   A forked piece of wood, or a small spring clamp, used for
   fastening clothes on a line.

Source : WordNet®

clothespin
     n : wood or plastic fastener; for holding clothes on a
         clothesline [syn: {clothes pin}, {clothes peg}]