Definitions

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

  • n. See sonic barrier.
  • n. A set of tall wooden, plastic, or concrete barriers placed along a road or highway to muffle the sound of traffic.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The apparent physical boundary (caused by a sudden increase in drag) preventing objects from becoming supersonic.
  • n. A structure beside a highway designed to reduce the noise of traffic.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the increase in aerodynamic drag as an airplane approaches the speed of sound

Etymologies

Sorry, no etymologies found.

Examples

Sorry, no example sentences found.

Comments

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