castellations

 
Pronunciation: /ˌkastəˈleɪʃ(ə)nz/

plural noun

  • defensive or decorative parapets with regularly spaced notches; battlements: castellations and turrets added to the charm
  • (castellation) [mass noun] the use or building of castellations: one or two of the houses bore hints of castellation

Origin:

early 19th century: based on medieval Latin castellare 'to build castles', from castellum (see castle)