/fas"euhn, fah"seuhn/ , v.t.
1. to attach firmly or securely in place; fix securely to something else.
2. to make secure, as an article of dress with buttons, clasps, etc., or a door with a lock, bolt, etc.
3. to enclose securely, as a person or an animal (usually fol. by in ): to fasten a monkey in a cage.
4. to attach, associate, or connect: to fasten a nickname on someone.
5. to direct (the eyes, thoughts, etc.) intently: to fasten one's eyes on a speaker.
v.i.
6. to become fast, fixed, or firm.
7. to close firmly or securely; lock: This clasp won't fasten.
8. to take a firm hold; seize (usually fol. by on or upon ): to fasten on an idea.
9. to focus attention; concentrate (usually fol. by on or upon ): His gaze fastened on the jewels.
[ bef. 900; ME fastenen, OE faestnian; c. ON fastna to betroth; akin to FAST 1 ]
Syn. 1. connect, link, hook, clasp, clinch, rivet, clamp, bind, tie, tether.