an exploratory walk by an astronaut on the surface of the moon.

verb (used without object)

(of an astronaut) to walk on the surface of the moon.

Origin of moonwalk

An Americanism dating back to 1965–70; moon + walk
Related formsmoon·walk·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for moonwalk

Contemporary Examples of moonwalk

Word Origin and History for moonwalk

"a walking on the moon," 1966, from moon (n.) + walk (n.).

Online Etymology Dictionary, © 2010 Douglas Harper