key lending rate
noun[C]
BANKING,FINANCE,ECONOMICSukusone of themaininterestratesset by acentralbank(= a country'sofficialbank),influencingtheratesofbanksthatofferservicestobusinessesand thepublic:
Thecentralbankhalveditskeylendingrateto arecordlow0.5%earlierthismonth.