re ‧ im ‧ burse /ˌriːəmˈbɜːs, ˌriːɪmˈbɜːs $ -ɜːrs/ BrE AmE verb [transitive]
[ Date: 1600-1700 ; Origin: imburse 'to pay' (16-19 centuries) , from Old French borser 'to get money' ]
formal to pay money back to someone when their money has been spent or lost
reimburse somebody for something
The company will reimburse you for travel expenses.
—reimbursement noun [uncountable and countable]