A capsule of an amphetamine and a sedative, or of two amphetamines (1970s+ Narcotics)
A police car: Hanger was patrolling Interstate 35 in his black-and-white(1960s+)
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
Idioms and Phrases with black and white
black and white
A monochromatic picture, drawing, television image, computer monitor, or film, as opposed to one using many colors, as in Photos in black and white fade less than those taken with color film.
[ Late 1800s
black or white. Involving a very clear distinction, without any gradations. For example, He tended to view everything as a black and white issue—it was either right or wrong—whereas his partner always found gray areas. This usage is based on the association of black with evil and white with virtue, which dates back at least 2,000 years.
[ Early 1800s
in black and white. Written down or in print, and therefore official. For example, The terms of our agreement were spelled out in black and white, so there should be no question about it. This term alludes to black ink or print on white paper. Shakespeare used it in Much Ado about Nothing (5:1).
[ Late 1500s