Crenelation (2.7.2009)

Definitions of Crenelation on the Web:

• battlement: a rampart built around the top of a castle with regular gaps for firing arrows or guns
• the action of constructing ramparts with gaps for firing guns or arrows 
  wordnet.princeton.edu/perl/webwn

• Crenellation (or crenelation, also known as castellation) is the name for the distinctive pattern that frames the tops of the walls of many medieval castles, often called battlements. ...
  en.wikipedia.org/wiki/Crenelation

• : Having battlements; looking like the top row of a medieval castle; The act of crenelating; adding a top row that looks like the top of a ...
  en.wiktionary.org/wiki/crenelation