From Longman Business DictionarySIBORSIBOR /ˈsiːbɔː-ɔːr/ nounBANKINGFINANCE Singapore Inter-Bank Offered Rate; the rate at which banks in Asia lend money to each other, used as a standard for other loansThe bank’s loan to the Vietnamese company is priced at 185 basis points over SIBOR. → compare Euribor, FIBOR, LIBOR