In half: in two equal parts, shares, etc.

Half and half. / To describe 2 possible outcomes as being equally likely.

(sports) A challenge between two opposing players, where both have an equal chance of taking possession.

plural of fifty-fifty

The cardinal number occurring after forty-nine and before fifty-one.

(countable) A banknote or coin with a denomination of 50. / (cricket) A batsman's score of at least 50 runs and less than 100 runs.

(US slang) Alternative form of 5150.

(US slang) Alternative form of 5150.

plural of fifty

The decade of the 1850s, 1950s, etc. / The decade of one's life from age 50 through age 59. / (temperature, rates, plural only) The range between 50 and 59.