적립금이 · 적립금을
reward points (cash value), store credit; accumulated savings
Example
이번 주문에서 적립금 오천 원을 사용했어요.
I used 5,000 won of store credit on this order.
Word parts
적 accumulate+립 set up+금 money
Literally 'money set aside and piled up.'
Good to know
Pronounced [정닙끔] — nasalization turns 적립 into [정닙].