Risled
From BiblePortal Wikipedia
Wilson's Dictionary of Bible Types [1]
Zechariah 6:3 (b) It is quite evident that these horses of various colors represent various types of GOD's curse and judgment. They probably represent the same four judgments that are mentioned in Ezekiel 14:21. It is difficult to state definitely which judgment is represented by the grisled horses. Certainly it is something that is a curse to Israel.
Webster's Dictionary [2]
(a.) See Grizzled.