'Merlon' definitions:

Definition of 'merlon'

(from WordNet)
noun
A solid section between two crenels in a crenelated battlement

Definition of 'Merlon'

From: GCIDE
  • Merlon \Mer"lon\, n. [F., perh. fr. L. moerus, for murus a wall, through (assumed) dim. moerulus.] (Fort.) One of the solid parts of a battlemented parapet; a battlement. See Illust. of Battlement. [1913 Webster]