brick ‧ bat /ˈbrɪkbæt/ BrE AmE noun [countable] written
[ Date: 1600-1700 ; Origin: brickbat 'piece of brick (as thrown at someone)' (16-20 centuries) , from brick + bat 'piece of brick' (16-17 centuries) ]
a criticism of something:
The plan has drawn both brickbats and praise.