Longman Dictionary English From Longman Business DictionaryLIBORLIBOR /ˈliːbɔː, ˈlaɪ--ɔːr/ noun London Interbank Offered Rate; the rate of interest at which London banks lend money to each other. Other rates of interest are often based on this rate → compare Euribor, FIBOR, SIBOR ldoceonline.com