This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. any activity by an astronaut outside of a spacecraft or space station in space; extravehicular activity

v. To perform a spacewalk.

v. move in space outside a space craft

"The spacewalk will be the 154th performed since the first two station building blocks were linked in late 1998."

spacewalking    spacewalks   

walk   

berlin-based    root-race    wackiest    layover    thestart