adj., adv., & n.
--adj. additional; more than is usual or necessary or expected.
--adv.
1. more than usually.
2 additionally (was charged extra).
--n.
1. an extra thing.
2 a thing for which an extra charge is made.
3 a person engaged temporarily to fill out a scene in a film or play, esp. as one of a crowd.
4 a special issue of a newspaper etc.
5 Cricket a run scored other than from a hit with the bat.
Phrases and idioms:
extra cover Cricket
1. a fielding position on a line between cover-point and mid-off, but beyond these.
2 a fielder at this position. extra size outsize. extra time Sport a further period of play at the end of a match when the scores are equal.
Etymology: prob. a shortening of EXTRAORDINARY