noun, masculine/buʃ.tʁu/plural: bouche-trous
a second fiddle, a stopgap, a stand-in, a fill-in, a makeweight; a rebound (a person whose sole purpose is to fill a void left by another person)
/buʃ.tʁu/
a second fiddle, a stopgap, a stand-in, a fill-in, a makeweight; a rebound (a person whose sole purpose is to fill a void left by another person)