1 a piece of clothing that covers you from your waist to your feet and has a separate part for each leg: She was wearing red pants and a white shirt. Jason needs a new pair of pants for school.2scare/bore/shock/charm etc. the pants off somebody informal to make someone feel very frightened, very bored, etc.: That movie scared the pants off Heidi.3somebody puts his/her pants on one leg at a time spoken used to say that someone who is famous is really just like everyone else [Origin: 1800–1900 pantaloons] → see also beat the pants off somebody/somethingat beat1 (12), do something by the seat of your pantsat seat1 (7), wear the pantsat wear1 (9)