In football and rugby, the player who is currently holding or running with the ball during play.
A modern sports term combining 'ball' (the object used in play) and 'carrier' (one who carries). Emerged in the 20th century with American football terminology.
In sports, every position player has a different name, but 'ballcarrier' is special because it's the only position defined purely by what you're holding—the person whose job is literally to have and move the ball.
Complete word intelligence in one call. Free tier — 50 lookups/day.