Meaning of MORTAR in English
/ ˈmɔːtə(r); NAmE ˈmɔːrt-/ noun , verb
[ U ] a mixture of sand, water, lime and cement used in building for holding bricks and stones together
[ C ] a heavy gun that fires bombs and shells high into the air; the bombs that are fired by this gun :
to come under mortar fire / attack
[ C ] a small hard bowl in which you can crush substances such as seeds and grains into powder with a special object (called a pestle )
see brick noun
[ v , vn ] to attack sb/sth using a mortar
noun senses 2 to 3 and verb late Old English (in sense 3), from Old French mortier , from Latin mortarium (to which the English spelling was later assimilated).
noun sense 1 Middle English : from Old French mortier , from Latin mortarium , probably a transferred sense of the word denoting a container.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005