howitzer UK /ˈhaʊ.ɪts.ə(ɹ)/US /ˈhaʊ.ɪts.əɹ/noun 2verb 1forms 3 noun2 •A cannon that combines certain characteristics of field guns and mortars, delivering projectiles with medium velocities, usually with relatively high trajectories; normally a cannon with a tube length of 20 to 30 calibers. •A powerfully hit shot.Belgium took a little while to catch Scotland with the first of the howitzer blows, but when the first one landed there was a certainty of more. Many more. — 2018 verb1 •To attack with a howitzer. formshowitzered · howitzering · howitzers