(rugby) A rugby player who is normally the first receiver of the ball from the scrum half after a scrum; a half-back.

Alternative spelling of half-baked

(chemistry) Either the oxidation or the reduction component of a redox reaction

(slang) drunk

(skateboarding, snowboarding, skiing, BMX, rollerskating, kickscootering, etc.) A structure used to perform tricks, approximately semicircular in cross-section, resembling the bottom half of a cylinder laying down.

The moon in its first or last quarter when only half the visible face is illuminated; a quarter moon. / Anything shaped like a crescent, especially the base of a fingernail. / A type of cookie

(cricket) A ball bowled so as to pitch roughly half way down the wicket, ie. half-way between batsman and bowler. (From a slow bowler this is a poor delivery, likely to be hit to the boundary.)

A person, especially a child, with only one living parent.

Alternative form of halfhearted

A rate of pay 50% greater than normal, commonly used for overtime work.