Definition Of case
a container designed to hold or protect something.
he placed the trumpet safely in its velvet-lined case
a legal action, especially one to be decided in a court of law.
a libel case
an instance of a disease or problem.
200,000 cases of hepatitis B
an instance of a particular situation; an example of something occurring.
a case of mistaken identity
any of the inflected forms of a noun, adjective, or pronoun that express the semantic relation of the word to other words in the sentence.
the accusative case