noun, plural ro·de·os.
verb (used without object), ro·de·oed, ro·de·o·ing.
Origin of rodeo
noun plural -os mainly US and Canadian
Word Origin for rodeo
1914 as public entertainment show of horse-riding skill, from earlier meaning "cattle round-up" (1834), from Spanish rodeo, "pen for cattle at a fair or market," literally "a going round," from rodear "go round, surround," related to rodare "revolve, roll," from Latin rotare "go around" (see rotary).