Definition of knock oneself out
- He hit his head against the table when he fell and knocked himself out.
- I knocked myself out to get the job done on time.
- "Do you mind if I use this exercise machine first?" "Knock yourself out."
: to strike something with a sharp blow
: to collide with something
: a sharp blow : rap, hit
: a severe misfortune or hardship
: setback, reversal
: a person's self : one's own self
: one's normal, healthy, or sane condition or self
: in a direction away from the inside or center
: from among others
: eject, oust
: to identify publicly as being such secretly
: to become publicly known
used as a function word to indicate an outward movement
: situated outside : external
: situated at a distance : outlying
: one who is out of office or power or on the outside
: an act or instance of putting a player out or of being put out in baseball
: in a manner that exceeds or surpasses and sometimes overpowers or defeats
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