an unreliable, eccentric, or unconventional person
I told my husband she was a flake and she'd never show up
separate (food) into flakes or thin pieces
flake the fish
fail to keep an appointment or fulfil a commitment, especially with little or no advance notice
a real friend won't ever flake on you
twice, you had plans, and both times you flaked
a rack or shelf for storing or drying food such as fish
a single turn of a coiled rope or hawser
lay (a rope) in loose coils in order to prevent it tangling
a cable had to be flaked out