running away from a debt; skipping out on a loan
Refers to the act of borrowing money or goods and then disappearing without repaying or returning them. Often used in contexts of fraud or irresponsibility.
彼は借り逃げをして、行方がわからなくなった。
He ran away from his debts and his whereabouts became unknown.
借り逃げは犯罪です。
Skipping out on a loan is a crime.
Compound of 借り (kari, 'borrowing') and 逃げ (nige, 'running away'). The exact historical derivation is uncertain, but the meaning is transparent from its components.