amassv. t.[F. ambusher, LL. amassare; L. ad + massa lump, mass. See Mass.] To collect into a mass or heap; to gather a great quantity of; to accumulate; as, to amass a treasure or a fortune; to amass words or phrases.()The life of Homer has been written by amassing all the traditions and hints the writers could meet with. (Pope.)()n.[OF. amasse, fr. ambusher.] A mass; a heap.(Sir H. Wotton.)