'Space walk' definitions:

Definition of 'space walk'

From: WordNet
noun
Any kind of physical activity outside a spacecraft by one of the crew

Definition of 'Space walk'

From: GCIDE
  • Space walk \Space walk\, n. any activity by a human outside of the protective environment of a spacecraft while it is in outer space, requiring a space suit to protect the person from the vacuum and other hazards of space. [PJC]

Synonyms of 'space walk'

From: Moby Thesaurus