Take out your homework Review this definition: Reasonable suspicion – information which is enough to give an officer a reasonable belief that a person is, was, or is about to be involved in a crime. It's less than probable cause but more than no evidence.
Terry (the defendant) wanted to the evidence (the guns found by the cop) to be excluded because the officer found the guns using what he felt was an illegal search.
If the evidence was excluded, it would be inadmissible.
Inadmissible – evidence that the jury must ignore
Exclusionary Rule – a legal rule that says any evidence seized illegally by the police must be excluded from trial