nocturnal

Adj.	1.	nocturnal - belonging to or active during the night; "nocturnal animals are active at night"; "nocturnal plants have flowers that open at night and close by day" biological science, biology - the science that studies living organisms nighttime - happening during or appropriate to the night; "nighttime attire"; "the cat's nighttime prowls" diurnal - belonging to or active during the day; "diurnal animals are active during the day"; "diurnal flowers are open during the day and closed at night"
	2.	nocturnal - of or relating to or occurring in the night; "nocturnal darkness"
	3.	nocturnal - of or during or relating to the night; "a nocturnal journey"; "nocturnal stillness"; "nocturnal predators" nighttime - happening during or appropriate to the night; "nighttime attire"; "the cat's nighttime prowls"

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