Probable cause: Having a reasonable belief that a specific person has committed a crime. Police must use own judgement but must be more than suspicion or hunch.
Reasonable suspicion: Believing someone is involved in committing a crime with even less evidence than probable cause but more than a mere hunch.
Drug courier profile: Descriptions of the age, race, personal appearance, behavior, and mannerisms of the typical drug courier. This is used to help establish probable cause.
Corroborate: Using information from other sources to confirm the informant’s tip.
Fourth Amendment: “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.”