reimburse (v.)

1610s, from re- "back" + imburse "to pay, enrich," literally "put in a purse" (c. 1530), from Middle French embourser, from Old French em- "in" + borser "to get money," from borse "purse," from Medieval Latin bursa (see purse (n.)). Related: Reimbursed; reimbursing.