brokenchange
nounUK /ˈbrəʊkən tʃeɪndʒ/
US /ˈbroʊkən tʃeɪndʒ/
Money you get back when you pay with a big coin or bill and the shop gives you smaller coins.
The cashier handed me my brokenchange in a little plastic cup.
OTHER MEANINGS
2. A swap or trade that did not work out as planned.
The toy swap turned into a brokenchange when both kids wanted their own toys back.
3. A change in plans that leaves things unfinished or messed up.
Our picnic had a brokenchange when the rain started.
4. Coins that are bent, scratched, or no longer shiny.
He kept a jar of brokenchange under his bed.