Real Dictionary

trip
If someone is tripping, they are having an experience in which their mind is affected by a drug such as LSD.
countable noun: A trip is a journey that you make to a particular place.
countable noun: A trip is an experience that someone has when their mind is affected by a drug such as LSD.
countable noun: If you say that someone is, for example, on a power trip, a guilt trip, or a nostalgia trip, you mean that their behaviour is motivated by power, guilt, or nostalgia.
verb: If someone trips somewhere, they walk there with light, quick steps.
verb: If you trip someone who is walking or running, you put your foot or something else in front of them, so that they knock their own foot against it and fall or nearly fall.
verb: If you trip when you are walking, you knock your foot against something and fall or nearly fall.

TRIP in American English
a light, quick tread
designating or of any of several high-strength, highly ductile steel alloys containing chromium, molybdenum, nickel, and carbon
to make stumble, esp. by catching the foot
to walk, run, or dance with light, rapid steps; skip; caper

trip in American English 1
noun: a journey or voyage

trip in American English 2
noun: a group of animals, as sheep, goats, or fowl; flock

trip in British English
noun: an outward and return journey, often for a specific purpose
verb: to stumble or cause to stumble