BLUE STAIN


Meaning of BLUE STAIN in English

noun

also blue sap stain

: a bluish discoloration of sapwood caused in many trees and especially conifers by any of various fungi (as of the genera Ceratostomella, Penicillium, or Fusarium ) — compare blue rot

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.