Definition of mortaring:
(n) :
(uncountable) A mixture of lime or cement, sand and water used for bonding building blocks.
(n) :
(countable) A hollow vessel used to pound, crush, rub, grind or mix ingredients with a pestle.
(n) :
(countable, military) A relatively lightweight, often portable indirect fire weapon which transmits recoil to a base plate and is designed to lob explosive shells at very steep trajectories.
(v) :
(transitive) To use mortar or plaster to join two things together.
(v) :
(transitive) To pound in a mortar.
(v) :
To fire a mortar (weapon).