Definition of noctambulist in English:

noctambulist

noun

rare
  • A sleepwalker.

    • ‘For nearly two years I had been going about my life a virtual somnambulist (noctambulist, if you prefer).’
    • ‘It's still stranger to imagine legions of English noctambulists marching into moonlit fields to chant Dryden and Pope; but the implication of Wordsworth's scenario is that anyone undertaking the experiment would soon see the superiority of the night sky to the painted firmament of Augustan poetry.’
    • ‘Why does a noctambulist walk about mechanically and sometimes in dangerous places (as on high roofs)?’

Origin

Mid 18th century: from Latin nox, noct- ‘night’ + ambulare ‘to walk’ + -ist.

Pronunciation

noctambulist

/nɒkˈtambjʊlɪst/