impulse >> ˈɪmpʌls
Definition: [noun] a sudden strong and unreflective urge or desire to act.
Example: I had an almost irresistible impulse to giggle
Definition: [noun] something that causes something to happen or happen more quickly; an impetus.
Example: an added impulse to this process of renewal
Definition: [noun] a pulse of electrical energy; a brief current.
Example: nerve impulses
Definition: [noun] a force acting briefly on a body and producing a finite change of momentum.
Example: ability to communicate motion by impulse