[ 'rəʊdɪəʊ , rə(ʊ)'deɪəʊ ]
■ noun ( plural ~s )
1》 an exhibition or contest in which cowboys show their skill at riding broncos, roping calves, etc.
↘an exhibition or contest demonstrating other skills, such as motorcycle riding.
2》 a round-up of cattle on a ranch for branding and counting.
■ verb ( ~s , ~ing , ~ed ) compete in a ~.
Origin
C19: from Sp., from rodear 'go round'.