from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To walk or perform other motor acts while asleep; somnambulate.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To walk and/or perform other actions while sleeping; to somnambulate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. walk in one's sleep
Back-formation from sleepwalking.(American Heritage® Dictionary of the English Language, Fourth Edition)
sleep + walk (Wiktionary)