Meaning of castellation | Babel Free

Definitions

1. The act or process of making a building into a castle.
   uncountable
2. The addition of battlements to a building, as for example when a feudal manor house needed fortification against border-raider attacks.
   uncountable
3. Any of a set of slots or grooves in an object, often machined into a metal part, as for example on a castellated nut.
   countable

CEFR level