Spacer

//ˈspeɪsɚ// noun, slang

Definitions

Noun
  1. 1
    A person who works or lives in space.

    "It was the futile throwing back in the face of the Spacers their most keenly felt insult: their insistence on considering the natives of Earth as disgustingly diseased."

  2. 2
    An object inserted to hold a space open in a row of items, e.g. beads or printed type.
  3. 3
    A bushing.
  4. 4
    A forgetful person; one who spaces out. slang
  5. 5
    A type of add-on device used by an asthmatic person to increase the effectiveness of a metered-dose inhaler.
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  1. 6
    An instrument for reversing a telegraphic current, especially in a marine cable, to increase the speed of transmission. historical

Etymology

From space + -er.

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