1 [count] a : a journey to a place ▪ They got back from their trip yesterday. ▪ a trip around the world ▪ How was your trip? ▪ a day trip [=a journey in which you go to visit a place and then return to your home on the same day] ▪ She is away on a business trip. [=she is traveling as part of her work] —often + to ▪ She took a trip to Europe. —see also field trip, road trip, round trip b : a short journey to a store, business, office, etc., for a particular purpose —usually + to ▪ He made a trip to the dentist. ▪ I need to make a quick trip to the store for milk and eggs.
2 [count] informal : the experience of strange mental effects (such as seeing things that are not real) that is produced by taking a very powerful drug (such as LSD) ▪ He was on an acid trip.
3 [count] : an act of falling or nearly falling that is caused by accidentally hitting your foot on something as you are walking or running ▪ an ankle injury caused by a trip
4 [singular] US informal + somewhat old-fashioned : an exciting or unusual experience or person ▪ The party was quite a trip. ▪ His mother is a trip.
5 [count] : an experience or activity that is like a journey ▪ He's on a nostalgia trip. [=he is thinking about the past a lot] —see also ego trip, guilt trip, power trip