key (English) [ IPA: ˈkiː ASM: কি]
    1. (Material Noun-Neuter) A manual device that opens lock তলা খুলিব পৰা এক সঁজুলি
    Contributed by: Bikram M Baruah on 2009-10-09
    2. (Abstract Noun) The primary solution of a problem; the root cause or the initiating point of an event