Somnambulist
Origin
From Latin somnus ("sleep") + ambulÅ ("to walk").
Full definition of somnambulist
Noun
somnambulist
(plural somnambulists)- A person who walks about in his or her sleep; a sleepwalker.
- 1824, Walter Scott, St. Ronan's Well, ch. 17:The clergyman floundered a moment, as is usual with an absent man who is recovering the train of his ideas, or a somnambulist when he is suddenly awakened.