Available Definitions:
1) n. - Anything that binds and makes fast, as a lock, catch, bolt, bar, buckle, etc.
2) a. - To cause to hold together or to something else; to attach or unite firmly; to cause to cleave to something , or to cleave together, by any means; as, to fasten boards together with nails or cords; to fasten anything in our thoughts.
3) a. - To cause to take close effect; to make to tell; to lay on; as, to fasten a blow.
4) v. i. - To fix one's self; to take firm hold; to clinch; to cling.