Word Study
amigo
CIDE DICTIONARY
amigo, n. [Sp., fr. L. amicus.].
A friend; -- a Spanish term applied in the Philippine Islands to friendly natives. [Webster 1913 Suppl.]
OXFORD DICTIONARY
amigo, n. (pl. -os) esp. US colloq. (often as a form of address) a friend or comrade, esp. in Spanish-speaking areas.
Etymology
Sp.
THESAURUS
amigo
ace, acquaintance, associate, bedfellow, bedmate, bosom buddy, buddy, bunkie, bunkmate, butty, camarade, chamberfellow, chum, classmate, colleague, comate, companion, company, compeer, comrade, confidant, confrere, consociate, consort, copartner, crony, familiar, fellow, fellow student, girl friend, gossip, intimate, mate, messmate, old crony, pal, pard, pardner, partner, playfellow, playmate, roommate, schoolfellow, schoolmate, shipmate, side partner, sidekick, teammate, workfellow, yokefellow, yokemateFor further exploring for "amigo" in Webster Dictionary Online