changepocket
/ˈtʃeɪndʒpɒkt/Definitions
1. noun
a small pocket or pouch attached to a garment, typically on the side, in which a watch, coins, or other small items can be carried
“She rummaged through her changepocket to find her phone’s charger.”
2. noun
a pocket or pouch attached to a piece of clothing in which to store small items such as keys or money
“He used the changepocket in his jacket to hold his house keys.”