Definition of tamp in:
(v) :
To enter a public transport system (especially the London Underground) by tapping a travelcard on the card-reader
(v) :
(African-American Vernacular, slang, transitive) To contact (someone); to call (someone) on the phone.
(v) :
(slang) To switch places with someone.
(n) :
(golf) A simple, short putt very close to the hole.
(n) :
(soccer) A simple shot into the goal from close range, and without opposition.
(v) :
(soccer) To kick a simple shot, without opposition, from close range into the goal.