(idiomatic) A spouse.

A broad step between flights of a staircase. / (mathematics) Either of the two parts of three-dimensional space divided by a plane.

Alternative form of half-moon

(US, Canada) Half-mast.

A running race over the distance of 21.0975 km, half the length of a marathon.

(historical) A pre-decimal coin used in Britain, Ireland and New Zealand, equivalent to 30 pence or two shillings and six pence

Alternative form of halftone

Alternative form of halftone

(botany) Of a plant: requiring protection against frost.

(botany) A plant that requires protection against frost.