Pass from physical life and lose all bodily attributes and functions necessary to sustain life - die, decease, perish, go, exit, pass away, expire, pass, kick the bucket, buy the farm [N. Amer], conk, give-up the ghost, drop dead, pop off, choke, croak, snuff it, pop one's clogs
Derived forms: cashes in one's chips, cashed in one's chips, cashing in one's chips