Definition of "spacewalk" [spacewalk]

• Any activity by an astronaut outside of a spacecraft or space station in space; extravehicular activity (noun)
• To perform a spacewalk. (verb)

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• "The spacewalk will be the 154th performed since the first two station building blocks were linked in late 1998."
• "Astronauts will attempt to install the new pump, an on-board spare, on the second spacewalk, which is planned for Wednesday."
• "The main objective of the spacewalk was the repair of a torn solar array."