dē-normo, no perf., ātum, 1, v. a. [norma],
to disfigure, to make irregular or crooked (very rare): angulus, qui nunc denormat agellum, Hor. S. 2, 6, 9: linea denormata, Auct. de Lim. p. 252 Goes.
dē-nōrmō —, —, āre de + norma, to disfigure, make irregular : (angulus) agellum, H. ...
An Elementary Latin Dictionary