in the name-list to the fall of condolin this is made explicit : 'earendl [ sic ] though belike it hath some kinship to the elfin ea and earen `` eagle '' and `` eyrie '' ( wherefore cometh to mind the passage of cristhorn and the use of the sign of the eagle by idril [ see p. 193 ] ) is thought to be woven of that secret tongue of the gondothlim [ see p .