tirr \ˈtər\verb (-ed/-ing/-s) Etymology: probably short for obsolete English tirve — more at tirl (to strip) transitive verb 1.chiefly Scotland: to tear off : strip, uncover 2.chiefly Scotland: to strip off the roof of 3.chiefly Scotland: to remove the surface soil from especially in quarrying intransitive verb chiefly Scotland: to remove one's clothes : undress