Insert the coin into the coin slot to make a phone call.
coin purse
Frequency:
70
%
She kept her spare change in a small coin purse.
coin collector
Frequency:
60
%
He is an avid coin collector and has a vast collection of rare coins.
coin operated
Frequency:
50
%
The vending machine is coin-operated and only accepts quarters.
Idiomatic Expressions for coin box
Phrase: empty the coin box
Meaning: to take all the money or profits from a venture
Usage: The company decided to empty the coin box and reinvest the profits into research and development.