LESSOR Meaning of LESSOR in English [ lɛ'sɔ: , 'lɛsɔ: ]■ noun a person who leases or lets a property to another.OriginME: from Anglo-Norman Fr., from OFr. lesser 'let, leave'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004