Gave me a half smile.
The tank is half empty.
Only half right.
A half past one.
The concert was not half bad.
An example of a half is two quarts: a half gallon.
An example of a half is an attempt without a lot of energy: a half hearted try.
An example of half used as an adverb is in the phrase "half done," which means partially done.
An example of half is the first part of a football game.
An example of half is 30 minutes after 10 AM; a half past ten.
A half bushel; a half hour; a half dollar; a half view.
We went to bed at half ten.
A half dream; half knowledge.
Half-colored; half done; half-hearted; half persuaded; half conscious.
A half uncle or half aunt or half cousin.
Three-quarters minus a quarter is a half.
The four halves of the house.