crenellation

英

美

n.  锯齿状物；开垛口

复数：crenellations　

COCA.44010

英英释义

noun

• the action of constructing ramparts with gaps for firing guns or arrows
  Synonym:crenelation
• a rampart built around the top of a castle with regular gaps for firing arrows or guns
  Synonym:battlementcrenelation