Decimate

Webster's Dictionary of the English Language

·vt To take the tenth part of; to Tithe.

II. Decimate ·vt To destroy a considerable part of; as, to decimate an army in battle; to decimate a people by disease.

III. Decimate ·vt To select by lot and punish with death every tenth man of; as, to decimate a regiment as a punishment for mutiny.