What does 主人 (zhǔ rén) mean in English?

Card 1261HSK 2010 Level 51261/1311
CARD1261
PROGRESS96%
主人
zhǔ rén
master; host; CL:個|个[ge4]

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