おつり
おつり · otsuri · JLPT N4 · noun
change
🪙 o (polite) + tsuri, from tsuriau = to balance: the amount that evens the deal
お is the polite prefix; つり comes from 釣り合う (tsuriau), to be in balance. The change handed back is what balances your payment against the price. Same つり as in 釣り (fishing), so a sound hook also works: the cashier fishes out your coins.