ar·til·lery 
/ɑɚˈtɪləri/ noun
/ɑɚˈtɪləri/ noun [noncount] 1 : large guns that are used to shoot over a great distance
▪ The troops were being bombarded by artillery. — often used before another noun ▪ The troops were under heavy artillery fire. ▪ artillery shells — often used figuratively ▪ His first argument didn't work, so he brought out the heavy artillery. [=he started using a different and more powerful argument] 2 : the part of an army that uses large guns to shoot over a great distance
▪ a captain in the artillery — often used before another noun ▪ artillery units
▪ The troops were being bombarded by artillery. — often used before another noun ▪ The troops were under heavy artillery fire. ▪ artillery shells — often used figuratively ▪ His first argument didn't work, so he brought out the heavy artillery. [=he started using a different and more powerful argument]
▪ a captain in the artillery — often used before another noun ▪ artillery units
