flak also flack 
/ˈflæk/ noun
/ˈflæk/ noun [noncount] 1 : exploding shells that are shot at enemy aircraft from guns on the ground 2 informal : harsh criticism
▪ He caught/drew heavy flak for his decision to oppose the new school. ▪ He took a lot of flak from the other kids for his unusual appearance.
▪ He caught/drew heavy flak for his decision to oppose the new school. ▪ He took a lot of flak from the other kids for his unusual appearance.
