In order that the mortar in the joints may not suffer from frosts, drench it with oil-dregs every year before winter begins. Thus treated, it will not let the hoarfrost enter it.
Though thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not his foolishness depart from him.
Nay, if he take you in hand, sir, with an argument, He'll bray you in a mortar.Ben Jonson
Freedom of the press is the mortar that binds together the bricks of democracy - and it is also the open window embedded in those bricks.
Showers of [cannon] balls... and shells... poured into the fort in one incessant stream, causing great flakes of masonry to fall in all directions. When the immense mortar shells, after sailing high in he air, came down in a vertical direction and buried themselves in the parade ground, their explosion shook the fort like an earthquake.