What does 粮票 (liángpiào) mean in English?

Card 1618HSK Level 41618/3571
CARD1618
PROGRESS45%
粮票
糧票
liángpiào
food or grain coupon(Noun)

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