捡球 literally means 'to pick up a ball' and functions as a compound verb describing the physical action of retrieving a ball that has rolled away, fallen, or been hit out of bounds—especially in sports like tennis, basketball, or soccer. The first character 捡 (jiǎn) means 'to pick up' or 'to retrieve', while 球 (qiú) means 'ball'. Together, they form a specific, action-oriented phrase used almost exclusively in athletic or recreational contexts where balls are actively handled or moved.

This term is common in coaching instructions, youth sports drills, and casual play. It emphasizes intentional retrieval—not just seeing or noticing the ball, but moving to collect it. Unlike generic verbs like 拿 (ná, 'to take') or 取 (qǔ, 'to get'), 捡球 implies the ball is on the ground or otherwise inaccessible without bending, walking, or chasing. It’s neutral in register: appropriate for children’s classes, professional training, and everyday conversation among players.