What does 墙 (qiáng) mean in English?

Card 324HSK 2010 Level 4324/586
CARD324
PROGRESS55%
qiáng
wall; CL:面[mian4],堵[du3]

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