What does 主席 (zhǔ xí) mean in English?

Card 1262HSK 2010 Level 51262/1311
CARD1262
PROGRESS96%
主席
zhǔ xí
chairperson; premier; chairman; CL:個|个[ge4],位[wei4]

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