Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • interjection Used to say good night to someone, especially to a child, who is going to bed.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Reduplication of night.]

Support

Help support Wordnik (and make this page ad-free) by adopting the word night-night.

Examples

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.