from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A loudspeaker designed to reproduce bass frequencies.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electronic speaker that produces low-frequency sound.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a loudspeaker that reproduces lower audio frequency sounds
From woof2.(American Heritage® Dictionary of the English Language, Fourth Edition)
From woof ("the sound a dog makes"), + -er ("agent suffix") (Wiktionary)