Mortar (weapon) fires shells at a much lower velocity and higher ballistic arc than other ordnance

Chemical mortar battalion

Mortar (masonry), material used in masonry to fill the gaps between blocks and bind them together

Mortar and pestle, a vessel and implement used to crush or grind materials

Mortar (firestop), hydraulic cementitious material used to firestop through-penetrations in wall and floor assemblies required to have a fire-resistance rating

Mortarboard, a flattened type of headwear normally worn as part of academic dress