An approximation of the sound of laughter.

A laugh. / Something funny; a joke.

To laugh.

(architecture) A ditch with one vertical side, acting as a sunken fence, designed to block the entry of animals into lawns and parks without breaking sightlines.

Expression of laughter.

plural of ha-ha

(archaic) Alternative form of a (“have”)

A representation of laughter. / An exclamation of triumph or discovery. / (archaic) An exclamation of grief. / (dated) A sound of hesitation: er, um.

Said when making a vigorous attack.

(Britain, colloquial) Abbreviation of half.