from The American Heritage® Dictionary of the English Language, 4th Edition
- interj. Used to express farewell.
- adv. Informal Away.
- adv. Informal To bed; to sleep: "[Live Senate television is] a great way to go bye-bye. Pretty soon you're asleep” ( William Proxmire).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- interj. Goodbye.
- n. A goodbye.
- n. bedtime for a toddler, going to sleep, going to bed.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a farewell remark
Reduplication of bye2.(American Heritage® Dictionary of the English Language, Fourth Edition)
From bye, goodbye. (Wiktionary)