CRENELLE

{ Cre‐nelle″, Cre‐nel″ } (kr?–n?l″), n. [[OF. crenel, F. cr�neau, LL. crenellus, kernellus, dim. (prob.) fr. L. crena notch. See Crenny.]] 1. 1. An embrasure or indentation in a battlement; a loophole in a fortress; an indentation; a notch. See Merlon, and Illust. of Battlement.
2. 2. (Bot.) Same as Crenature.