Trips, short for triple, is an aspect of an offensive formation that involves three receivers split out to one side of the formation.
Trips doesn’t describe the formation; it is just an aspect of the formation.
Gridiron Glossary is a resource for football terms that are often used by commentators, coaches and players but rarely defined. If there is a term you have questions about or a definition you don’t agree with, let me know at billy@thirddowndraw.com.