half

1. One of two usually roughly equal parts into which anything may be divided, or considered as divided.Examples: "An association football match usually consists of two halves of 45 minutes each."

2. One of two usually roughly equal parts into which anything may be divided, or considered as divided.Examples: "However, the hosts hit back and hit back hard, first replacement hooker Andrew Hore sliding over, then Williams careering out of his own half and leaving several defenders for dead before flipping the ball to Nonu to finish off a scintillating move."

3. Half of a standard measure, chiefly:Examples: "He came back with a pint of Guinness for me and a half of bitter for Wendy."; "I accepted a half of bitter from him."; "I went to the bar where I bought a pint and two large brandies. ... "Not brandy," she replied, "but I could use a long drink - maybe a half of lager.""British

4. Half of a standard measure, chiefly:Examples: "Barrels came in firkins, nine gallons; kilderkins, eighteen gallons; halves, twenty-seven gallons; barrels, thirty-six gallons and hogsheads, fifty-four."

5. (preceded by “a” or a number) The fraction obtained by dividing 1 by 2.Examples: "Three-quarters minus a quarter is a half."Synonyms: ½

6. (slang) A half sibling.Examples: "So for Richard and Barbara, Jeff and Kari, the impossibly varied collection of steps and halves that is another legacy of my father."slang