intransitive verb Date: 1842 to walk while or as if while asleep, to proceed in a passive often lethargic manner , ~ noun ~er noun
SLEEPWALK
Meaning of SLEEPWALK in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012