Search Result for "woofer": 
Wordnet 3.0

NOUN (1)

1. a loudspeaker that reproduces lower audio frequency sounds;

WordNet (r) 3.0 (2006):

woofer n 1: a loudspeaker that reproduces lower audio frequency sounds
Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "woofer": acoustical network, capacitor speaker, coaxial speaker, cone, crossover network, diaphragm, dynamic speaker, earphone, electrodynamic speaker, electromagnetic speaker, electrostatic speaker, excited-field speaker, full-fidelity speaker, headphone, headset, high-fidelity speaker, high-frequency speaker, horn, loudspeaker, low-frequency speaker, midrange speaker, monorange speaker, moving-coil speaker, permanent magnet speaker, speaker, speaker system, speaker unit, triaxial speaker, tweeter, voice coil
The Free On-line Dictionary of Computing (30 December 2018):

woofer tweeter (University of Waterloo) Some varieties of wide paper for printers have a perforation 8.5 inches from the left margin that allows the 3.5 inch excess on the right-hand side to be torn off when the print format is 80 columns or less wide. If done with sufficient aplomb this makes a sound like the "woof" of a dog. If the large part is the "woofer" then the small part must obviously be the "tweeter", following the names for the large and small cones in a hi-fi loudspeaker. These terms have been in use at Waterloo since 1972, but are unknown elsewhere. Compare chad. [Jargon File] (1997-03-21)