Something or someone that fastens. / Mechanically, any device that fastens; especially, a collective term for items such as screws, nuts, washers, clasps, bolts and the like.

plural of fastener

(transitive, intransitive) To attach or connect in a secure manner. / To cause to take close effect; to make to tell; to land.

simple past tense and past participle of fasten

present participle of fasten

A hook or similar restraint used to fasten things together; fastener.

plural of fastening

Third-person singular simple present indicative form of fasten

Capable of being fastened.

A zip fastener.