Definitions
1.nounWorking time outside of one's regular hours."Workers are usually paid extra for working overtime."
2.nounThe rate of pay, usually higher, for work done outside of or in addition to regular hours.
3.nounAn extra period of play when a contest has a tie score at the end of regulation. (British: extra time.)"That last-second shot ties the game 99-99 and sends it to overtime!"
4.verbTo measure something incorrectly, as taking more time than it actually did.
5.adverbExceeding regular working hours.
6.adverbBeyond the normal or usual extent.