impulse

noun

1
the act of applying force suddenly
the impulse knocked him over
2
an impelling force or strength
the car's momentum carried it off the road
3
the electrical discharge that travels along a nerve fiber
they demonstrated the transmission of impulses from the cortex to the hypothalamus
4
(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
the pulsations seemed to be coming from a star
5
a sudden desire
he bought it on an impulse
6
an instinctive motive
profound religious impulses

Also useful for “impulse”:Unscrambler— Rearrange the letters in “impulse”