n.1. An instance of something; an occurrence; an example:
a case of mistaken identity. See Synonyms at
example.
2. An occurrence of a disease or disorder: a mild case of flu.
3. A set of circumstances or a state of affairs; a situation: It may rain, in which case the hike will be canceled.
4. Actual fact; reality: We suspected the walls were hollow, and this proved to be the case.
5. A question or problem; a matter: It is simply a case of honor.
6. A situation that requires investigation, especially by a formal or official body.
7. Law a. An action or a suit or just grounds for an action.
b. The facts or evidence offered in support of a claim.
8. A set of reasons or supporting facts; an argument: presented a good case for changing the law.
9. A person being assisted, treated, or studied, as by a physician, lawyer, or social worker.
10. Informal A peculiar or eccentric person; a character.
11. Linguistics a. In traditional grammar, a distinct form of a noun, pronoun, or modifier that is used to express one or more particular syntactic relationships to other words in a sentence.
b. Case In some varieties of generative grammar, the thematic or semantic role of a noun phrase as represented abstractly but not necessarily indicated overtly in surface structure. In such frameworks, nouns in English have Case even in the absence of inflectional case endings.
in case1. If it happens that; if.
2. As a precaution: took along an umbrella, just in case.
[Middle English
cas, from Old French, from Latin
c
sus, from past participle of
cadere,
to fall; see
kad- in Indo-European roots.]