The Collaborative International Dictionary
Nocturnally
Nocturnally \Noc*tur"nal*ly\, adv. By night; nightly.
Wiktionary
nocturnally
adv. 1 During the night 2 Every night.
WordNet
nocturnally
adv. at night; "nocturnally active bird"
Usage examples of "nocturnally".
It was the midnight yell of the cat, and Carter knew at last that the old village folk were right when they made low guesses about the cryptical realms which are known only to cats, and to which the elders among cats repair by stealth nocturnally, springing from high housetops.