Hypertext Webster Gateway: "somnambulist"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Somnambulist \Som*nam"bu*list\, n.
A person who is subject to somnambulism; one who walks in his
sleep; a sleepwalker; a noctambulist.
From WordNet (r) 1.7 (wn)
somnambulist
n : someone who walks about in their sleep [syn: {sleepwalker},
{noctambulist}]
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