from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. A bugle call or drum signal sounded at night, as at a military camp, as an order to put out lights and also sounded at military funerals and memorial services.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A particular song played at the end of the day, and at military funerals.
- n. Plural form of tap.
- v. Third-person singular simple present indicative form of tap.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (military) signal to turn the lights out
Perhaps alteration of taptoo, tattoo, variant of tattoo1.(American Heritage® Dictionary of the English Language, Fourth Edition)