'Crenel' definitions:

Definition of 'crenel'

(from WordNet)
noun
One of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.) [syn: scallop, crenation, crenature, crenel, crenelle]
noun
A notch or open space between two merlons in a crenelated battlement [syn: crenel, crenelle]
verb
Supply with battlements [syn: crenel, crenelate, crenellate]

Definition of 'Crenel'

From: GCIDE
  • Crenelle \Cre*nelle"\, Crenel \Cre*nel"\ (kr?-n?l"), n. [OF. crenel, F. cr?neau, LL. crenellus, kernellus, dim. (prob.) fr. L. crena notch. See Crenny.]
  • 1. An embrasure or indentation in a battlement; a loophole in a fortress; an indentation; a notch. See Merlon, and Illust. of Battlement. [1913 Webster]
  • 2. (Bot.) Same as Crenature. [1913 Webster]

Definition of 'Crenel'

From: GCIDE
  • Crenel \Cre*nel"\ (kr?-n?l"), n. See Crenelle. [1913 Webster]