Initialism of his apostolic majesty, the title given to a number of historical kings of Hungary.

(dialectal) A notch or small incision.

(intransitive) To plead on someone else's behalf. / (intransitive) To act as a mediator in a dispute; to arbitrate or mediate. / To pass between; to intervene.

(chemistry) A piece of laboratory equipment used for creating a cold spot on a surface. / Used other than figuratively or idiomatically: see cold, finger.