wave·guide 
(wāvgīd′)
(wāvgīd′)n.
A structure of conductive or dielectric material boundaries used to guide high-frequency electromagnetic and acoustic waves.
- wear out one's welcome
- wear out welcome
- wear the pants
- wear the pants/trousers
- wear the trousers
- wear thin
- weary
- weasand
- weasel
- weasel out
- weasel word
- weather
- weather balloon
- weather-beaten
- weatherboard
- weatherboarding
- weather-bound
- weather bureau
- weathercast
- weathercaster
- weathercock
- weather deck
- weathered
- weather eye
- weatherglass