black widow
noun
1
a black amphetamine capsule; Benzedrine™ (amphetamine sulphate), a central nervous system stimulant US, 1972.
2
a capsule containing both barbiturate and amphetamine US, 1973.
3
an M-16 rifle equipped with a night scope US, 1991.
4
a limited edition, fuel-injected 1957 Chevrolet 150 sedan, built strictly for racing but then banned from stock car racing US, 1992