1 snowflake; scale, chip, bit, piece, scrap, particle, tuft, flock, scurf, fragment, shaving, sliver; wafer, lamina, Technical squama:
A flake of slate caught him in the eye.
2 Often, flake off. scale, chip, fragment; Technical desquamate, exfoliate:
The paint is flaking off on this side.
3 flake out.
(a) collapse, go to or fall asleep, drop off (to sleep), pass out, keel over:
After the game, I flaked out on the couch for ten hours.
(b) become flaky, act crazy:
He flaked out when he heard the new record.