definition of
stimulant

[1] #1 stimulant n. [stimulation, stimulus, input] any stimulating information or event; acts to arouse action. wn

[2] #2 stimulant n. [stimulant drug, excitant] a drug that temporarily quickens some vital process. wn

[3] #3 stimulant s. [stimulating] that stimulates; "stimulant phenomena". wn