—a member of a small independent group taking part in irregular fighting, typically against larger regular forces: this small town fell to the guerrillas | [ as modifier ] : guerrilla warfare.
ORIGIN early 19th cent. (introduced during the Peninsular War (1808–14)): from Spanish, diminutive of guerra ‘war.’
—a powerfully built great ape with a large head and short neck, found in the forests of central Africa. It is the largest living primate.
ORIGIN from an alleged African word for a wild or hairy person, found in the Greek account of the voyage of the Carthaginian explorer Hanno in the 5th or 6th cent. BC; adopted in 1847 as the specific name of the ape.