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.
Stimulant Drugs. Stimulants are substances that increase, or stimulate the normal activity of the central nervous system. In other words, they increase the normal level of awareness, alertness and energy in one's mind and body. They usually have side-effects and if you take them for an extended period of time, you may become dependent upon them.