HORARY, hourly.
HORN-MAD, stark mad (quibble).
HORN-THUMB, cut-purses were in the habit of wearing a horn shield on the thumb.
HORSE-BREAD-EATING, horses were often fed on coarse bread.
HORSE-COURSER, horse-dealer.
HOSPITAL, Christ's Hospital.
HOWLEGLAS, Eulenspiegel, the hero of a popular German tale which relates his buffooneries and knavish tricks.
HUFF, hectoring, arrogance.
HUFF IT, swagger.
HUISHER (Fr. huissier), usher.