What does 双 (shuāng) mean in English?

Card 42NPCR Level 1742/55
CARD42
PROGRESS76%
双
雙
shuāng
pair(Measure Word)
Click to reveal
← Previous↑ DeckNext →

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