Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An astronaut engaging in a space walk or other activity outside the spacecraft

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an astronaut who is active outside a spacecraft in outer space

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

space +‎ walker

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