Full Definition of BOA. 1. : any of a family (Boidae) of large snakes that kill by constriction and that includes the boa constrictor, anaconda, and python.2. : a long fluffy scarf. See boa defined for English-language learners. See boa defined for kids. ADVERTISEMENT.ull Definition of BOA. 1. : any of a family (Boidae) of large snakes that kill by constriction and that includes the boa constrictor, anaconda, and python. 2. : a long fluffy scarf. See boa defined for English-language learners. See boa defined for kids. ADVERTISEMENT.
war-on-drugs_0.jpg. June 2011 marks the 40th anniversary of President Richard Nixon's declaration of a war on drugs â a war that has cost roughly a trillion dollars, has produced little to no effect on the supply of or demand for drugs in the United States, and has contributed to making America the world's largest incarcerator.
The Effect of Drugs on Serotonin. The Effect of Drugs on Serotonin. When a person uses a drug, he will experience several side effects. These effects include both physical and psychological changes, and can be either short-term or long-lasting. Some of the most pronounced effects of drug use, though, appear in the brain.