a particular environment or walk of life

a single draining vein; on the right it empties into the inferior vena cava; on the left it empties into the left renal vein

a single draining vein; on the right it empties into the inferior vena cava; on the left it empties into the left renal vein

a Spanish or Portuguese or Latin American spectacle; a matador baits and (usually) kills a bull in an arena before many spectators