dextroamphetamine sulphate: an isomer of amphetamine (trade name Dexedrine) used as a central nervous system stimulant
drug of abuse: a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction
grey kingbird: a kingbird that breeds in the southeastern United States and winters in tropical America; similar to but larger than the eastern kingbird