Meaning of CASE in English
( n. )
One of the forms, or the inflections or changes of form, of a noun, pronoun, or adjective, which indicate its relation to other words, and in the aggregate constitute its declension; the relation which a noun or pronoun sustains to some other word.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012