oystershell scale: Meaning and Definition of

oys'ter•shell scale"

Pronunciation: (oi'stur-shel"), [key]
  1. a scale insect, Lepidosaphes ulmi, having a scale shaped like the shell of an oyster, which infests various deciduous trees and shrubs. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.