1. verb /fɑːst,fæst/
It is at the core of the Vision Quest, the solitary period of fasting and closeness to the earth to discover ones life path and purpose.
2. noun /fɑːst,fæst/
b) The period of time during which one abstains from or eats very little food.
3. adjective /fɑːst,fæst/
That rope is dangerously loose. Make it fast!
b) Of people: steadfast, with unwavering feeling. (Now only in set phrases like "fast friend".)
I am going to buy a fast car.
Syn: quick, rapid, speedy, swift, ahead, easy, slut, firm, immobile, secure, stable, stuck, tight, colour-fast, deep, sound
4. adverb /fɑːst,fæst/
Hold this rope as fast as you can.
b) Deeply or soundly.
He is fast asleep.
5. interjection /fɑːst,fæst/
Short for "stand fast", a warning not to pass between the arrow and the target.
Wikipedia foundation.