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.
Stimulants are drugs that stimulate the brain and central nervous system, speeding up communication between the two. They usually increase alertness and physical activity. They include amphetamines, cocaine, crack and some inhalants like amyl or butyl nitrites.timulants are drugs that stimulate the brain and central nervous system, speeding up communication between the two. They usually increase alertness and physical activity. They include amphetamines, cocaine, crack and some inhalants like amyl or butyl nitrites.