What does 第 (dì) mean in English?

Card 18IC2 Level 718/44
CARD18
PROGRESS41%
第
dì
(prefix indicating ordinal number e.g. first, number two etc)
Click to reveal
← Previous↑ DeckNext →

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