Definitions
1.nounOne of two usually roughly equal parts into which anything may be divided, or considered as divided."I ate the slightly smaller half of the apple."
2.nounHalf of a standard measure; frequently used for half a pint of beer or cider.
3.noun(preceded by “a” or a number) The fraction obtained by dividing 1 by 2."Three-quarters minus a quarter is a half."
4.nounPart; side; behalf.
5.nounAny of the three terms at Eton College, for Michaelmas, Lent, and summer.
6.nounA half sibling.
7.nounA child ticket.
8.verbTo halve.
9.adjectiveConsisting of a half (1/2, 50%)."a half bushel; a half hour; a half dollar; a half view"
10.adjectiveConsisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect."a half dream; half knowledge"
11.adjective(of a sibling) Having one parent (rather than two) in common.
12.adjective(rare, of a relative other than a sibling) Related through one common grandparent or ancestor rather than two.
13.adverbIn two equal parts or to an equal degree.
14.adverbIn some part approximating a half.
15.adverbPartially; imperfectly."He does sometimes half wish to change his life, but it is too difficult."
16.prepositionA half-hour after, thirty minutes after (used with the number of the hour)."half one"