The Collaborative International Dictionary
Noctivagant
Noctivagant \Noc*tiv"a*gant\, a. [L. nox, noctis, night + vagans, p. pr. of vagari to wander about.] (Zo["o]l.) Going about in the night; night-wandering.
Wiktionary
noctivagant
a. walk or wandering in the nighttime. (from 17th c.)
Usage examples of "noctivagant".
My mother whelped me in a mess of blankets while my noctivagant father towed in the big ships.