from The Century Dictionary and Cyclopedia

  • n. A metal disk for use in the wave-siren. The wave-form required is set out as a curve around the periphery of the disk, and the edge is then cut away along the line of the curve.


Sorry, no etymologies found.


Sorry, no example sentences found.

Wordnik is becoming a not-for-profit! Read our announcement here.


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