trip
noun.
a journey for some purpose (usually including the return)
he took a trip to the shopping center
noun.
a hallucinatory experience induced by drugs
an acid trip
noun.
an accidental misstep threatening (or causing) a fall
he blamed his slip on the ice|the jolt caused many slips and a few spills
Synonym: slip
noun.
an exciting or stimulating experience
Synonym: head trip
noun.
a catch mechanism that acts as a switch
the pressure activates the tripper and releases the water
Synonym: tripper
noun.
a light or nimble tread
he heard the trip of women's feet overhead
noun.
an unintentional but embarrassing blunder
he recited the whole poem without a single trip|he arranged his robes to avoid a trip-up later|confusion caused his unfortunate misstep
Synonym: misstep, stumble, trip-up
verb.
miss a step and fall or nearly fall
She stumbled over the tree root
Synonym: stumble
verb.
cause to stumble
The questions on the test tripped him up
Synonym: trip up
verb.
make a trip for pleasure
Synonym: jaunt, travel
verb.
put in motion or move to act
trigger a reaction|actuate the circuits
Synonym: trigger off, trigger, touch off, spark off, spark, set off, actuate, activate
verb.
get high, stoned, or drugged
He trips every weekend
Synonym: turn on, trip out, get off