adjective. Of or resembling a gallop, especially in rhythm or rapidity.

adjective. Developing or progressing at an accelerated rate.

adjective. Of or relating to a disease that progresses rapidly toward a fatal conclusion.

noun. The action of a horse that gallops; a running at a gallop.

Proceeding at a gallop; hence, figuratively, advancing rapidly; making rapid progress: as, a galloping consumption (that is, a consumption that proceeds rapidly to a fatal termination).

adjective. Going at a gallop; progressing rapidly.

verb. Present participle of gallop.