half

One 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."

Half of a standard measure; frequently used for half a pint of beer or cider.

(preceded by “a” or a number) The fraction obtained by dividing 1 by 2.

"Three-quarters minus a quarter is a half."

To halve.

Consisting of a half (1/2, 50%).

"a half bushel; a half hour; a half dollar; a half view"

Consisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect.

"a half dream; half knowledge"

(of a sibling) Having one parent (rather than two) in common.

In two equal parts or to an equal degree.

In some part approximating a half.

Partially; imperfectly.

"He does sometimes half wish to change his life, but it is too difficult."

A half-hour after, thirty minutes after (used with the number of the hour).

"half one"