What does 圈 (quān) mean in English?

Card 786HSK 2010 Level 5786/1311
CARD786
PROGRESS60%
quān
circle; ring; loop; classifier for loops, orbits, laps of race etc; CL:個|个[ge4]

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d