sleepwalker
sleep·walk·er
noun \ˈslēp-ˌwȯ-kər\Definition of SLEEPWALKER
: one who is subject to somnambulism : one who walks while sleeping—called also somnambulist
—sleep·walk \-ˌwȯk\ (audio pronunciation) intransitive verb
Learn More About
Seen & Heard 
What made you want to look up sleepwalker? Please tell us where you read or heard it (including the quote, if possible).
