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mortar
The word evokes a sense of crushing or binding. In the context of tools and construction, it represents the physical act of compression—either grinding a substance down to powder or squeezing a paste between blocks to create a permanent bond. In military and academic contexts, the term shifts toward a specific shape. The weapon is named for its resemblance to the grinding bowl, while the graduate cap mirrors the flat-topped appearance of the same tool.
Uncountable when referring to the wet paste used in masonry. Countable when referring to a weapon, a grinding bowl, or a graduation cap.
Meanings
A mixture of lime, cement, sand, and water used in building to bond bricks or stones.
"The mason applied a thick layer of mortar between the courses of brick."
A heavy piece of artillery that fires a explosive shell at a high angle.
"The infantry unit used a mortar to target the enemy position behind the hill."
A sturdy bowl, typically made of stone or ceramic, used with a pestle for grinding substances.
"She crushed the peppercorns in a marble mortar."
A square or cylindrical cap worn by graduates during a commencement ceremony.
"He adjusted his mortar and tassel before walking across the stage."