The word pickle is related to a similar-sounding Dutch word, pekel, meaning “brine.” In the 1400s, a pickle was a spicy sauce. Soon the word came to refer to the salty or acidic used to preserve foods, and later to the foods themselves...
pickle back n.— «We do something called a “pickle back”—a shot of Jameson with a shot of pickle-juice brine—that is quickly becoming a signature.» —“Jenn James of the Rusty Knot Never Wants to Hear ’Hotel...