max out

/M AE1 K S AW0 T/
verb
  1. 1

    (informal, transitive) To use (something) to the limit of its capabilities.

  2. 2

    (informal, intransitive) To reach the limit of one's capabilities.

  3. 3

    (informal, intransitive) To reach a maximum or a point at which no more growth or improvement is possible.

  4. 4

    (slang, US) To relax.

  5. 5

    (US, prison slang) To serve an entire sentence with no early parole, time off for good behavior, etc.