Nighty Night 

A cute way of saying good night to somebody or group of people.

Nighty night, sleep well now. :)

Nighty Night by sikknastyy February 17, 2015

Nightlight 

Mankinds only defense against the evil monsters of the night. If you don't have one, your days are numbered.

Nightlight, could we survive without you?

Nightlight by MaximumOverdrive February 22, 2009

Nightlight 

A tool commonly used by children under the age of 8 to scare the piss out of the boogeyman as he creeps out of the closet. Causes burning of the scalp, eyes, and genitals.

John's nightlight really helped him get to sleep.

Nightlight by Kyleddeck August 27, 2008

nightfighter 

An ugly girl you picked up and had sex with but has to leave before the sun comes up.

i picked up a nightfighter last night but she had to go before the sun came up because she only had one leg and no teeth...
true story!!

nightfighter by TeamSanchez November 29, 2007

nighty-night

Good night! Usually said when it's late into the night.

Nighty-night, me lovelies! Think big now.
(From Wallace & Gromit - The Curse of the Were-rabbit)

nighty-night by Peter Lu October 20, 2006

nightLight 

kids use this to keep away nightmares. this variant of the word shows how even in the roughest times, the light outshines the darkest night

i still use a nightLight when i sleep.

same. i can't sleep without one

nightLight by OriginalHomie May 19, 2019

Nighty Night Nigga 

Means to kill a nigga when dey talkin like a fuckboii. Refers to da sleepin bag. (Body bag)

Nighty night nigga ima put yo ass in da sleepin bag bitch.

Nighty Night Nigga by NiggaInDaHood December 29, 2011