English Verb planked simple past and past participle of plank Adjective planked (not comparable) (in combination) Made of planks of a specific type or number. 2006 November 20, Judy Pasternak, “Oases in Navajo Desert Contained 'A Witch's Brew'”, in Los Angeles Times:A rough-planked one-room shack Derived terms carvel-planked Wikiwand - on Seamless Wikipedia browsing. On steroids.