Hook-ups

noun, slang

Definitions

Noun
  1. 1
    A pair of miniature valves right next to each other on a wall, connecting through the wall to the household plumbing, used to provide water to a washing machine. (They are usually red and blue, with the red one delivering hot water and the blue one delivering cold water.) colloquial, plural, plural-only

Etymology

They are said to hook up with a washing machine.

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