Testcase is set of input values, execution 
preconditions,expected results and execution 
postconditions, developed for a particular objective or 
test conditons, such as to exercise a paticular program 
path or to verify compliance with a specific requiremnt.

a test case is set of condition under which tester will 
determine if a requirment up on application is partially or 
fully satsified

test case is a document designed which defines test 
procedure, input values, expected and actual results.

HI

Test Case is a Designed document Where We Analyse Between 
Expected Result & The Actual Result.

Test Case is executed for Evaluation of Results Based on 
the Requirement.

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Test case contain set of procedure or condition which is 
being used to evaluate the system behavior.Also it has both 
positive and negative senario's.

? A test case is a ?Document? that describes an input,
action, or event and an expected response, to determine if a
feature of an application is working correctly. 
A test case should contain particulars such as test case
identifier, test case name, objective, test
conditions/setup, input data requirements, steps, and
expected results. 
? Note that the process of developing test cases can help
find problems in the requirements or design of an
application, since it requires completely thinking through
the operation of the application. For this reason, it's
useful to prepare test cases early in the development
cycle if possible.

A tst case is a set of validation steps to determine that 
the functionality to be tested shows expected behaviour.

Test case is a condition to be applied on build to validate 
functionality

As per me : The Test case is “To see Requirement and the 
behavior of the application act similarly"

Test case:defines a test condition with required 
inputs,procedure and expected outputs.