What does "spacewalk" mean?

Any activity by an astronaut outside of a spacecraft or space station in space.

Spacewalk

Common synonyms include: conduct eva, do eva, eva, extravehicular activity, outside craft task, perform eva.

noun, verb

noun, verb ·2 syllables ·Rare ·Advanced level

Noun

1
Any activity by an astronaut outside of a spacecraft or space station in space.

Verb

"Russian cosmonaut Alexei Leonov performed the first spacewalk on March 18, 1965."

From space + walk.