1. the act of perceiving; observation; attention: to escape notice. 2. take notice to pay attention; attend. 3. take no notice of to ignore or disregard. 4. information about a future event; warning; announcement. 5. a displayed placard or announcement giving information.
Nicotine: A Stimulant Nicotine, the chemical that makes addicts out of cigarette smokers, is a stimulant with properties similar to those of cocaine and amphetamine (speed). Nicotine provides the pick-me-up that smokers feel.
LINK / CITE ADD TO WORD LIST. noun. The definition of a stimulant is something that raises activity and interest levels, or raises the level of physiological or nervous activity in the body. 1  Tax breaks that encourage business development are an example of a stimulant. 2  A cup of coffee is an example of a stimulant.