Search Result for "space walk":
Wordnet 3.0

NOUN (1)

1. any kind of physical activity outside a spacecraft by one of the crew; 



The Collaborative International Dictionary of English v.0.48:

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]


WordNet (r) 3.0 (2006):

space walk
    n 1: any kind of physical activity outside a spacecraft by one
         of the crew