Definitions For Castellation

Noun

CASTELLATION. (countable and uncountable, plural CASTELLATIONs) (uncountable) The act or process of making a building into a castle. (uncountable) The addition of battlement#noun, battlements to a building, as for example when a feudal manor house needed fortification#noun, fortification against border-raider attacks. (countable) Any of a set of slot#noun, slots or groove#noun, grooves in an object, often machine#verb, machined into a metal part#noun, part, as for example on a castellated nut#noun, castellated nut.

Coordinate terms

crenellation (overlaps synonymously in the architectural sense; coordinate in the machinery sense, whereas the same concept is invoked but the words are used in idiomatically non-interchangeable ways, as with crenellated flashlight bezels but castellated nuts)