1) Noctambulation 2) Noctambulism 3) Performance by Lady Macbeth 4) Sleeping 5) Sleepwalking 6) Somnambulism 7) The act of walking in sleep 8) Walk 9) Walking Found on https://www.crosswordclues.com/clue/somnambulation
Som·nam`bu·la'tion noun [ Latin somnus sleep + ambulatio a walking about, from ambulare to walk. See Somnolent , Amble .] The act of walking in sleep. Found on http://www.encyclo.co.uk/webster/S/143