Definition of half:
consisting of a moiety, or half; consisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect
"a half bushel; a half hour; a half dollar; a half view"
in an equal part or degree; in some part approximating a half; partially; imperfectly; to halve
"half-colored; half done; half-hearted; half persuaded; half conscious"
of two equal part
s into which anything may be divide
d, or considered as divided; -- sometimes followed by of; as, a half of an apple; half of a standard measure; frequently used for half a pint of beer or cider
"three-quarters minus a quarter is a half."