The word "leave" does have several definitions. As a verb it doesn't have a plural form. Apparently, in the subject-verb agreement "leave" takes the verb + "S" form that makes it appear plural (e. G. She leaves the house early.) However, the word leaves is also a homonym for the plural form of leaf. As a noun (that is, synonym for vacation or furlough), still it doesn't take the "S" form of the verb (e.g We took our leave for the prior to our honeymoon.)
