Definition from Wiktionary, the free dictionary
- fifty years; half of a century.
- (cricket) A score of 50 runs by a single batsman
2009 January 30, AAP, “Vics make great start despite Rogers loss”, Herald Sun:
- He brought up his half-century with a powerful drive past offspinner Dan Cullen, whose seven overs cost 0-52.
- (sports) A score of 50 points in a single game.