/kren"l/ , n. , v. , creneled, creneling or ( esp. Brit. ) crenelled, crenelling .
n.
1. any of the open spaces between the merlons of a battlement. See illus. under battlement .
2. a crenature.
v.t.
3. to crenelate.
Also, crenelle /kri nel"/ .
[ 1475-85; earlier creneul, crennel cren notch (attested since the 15th century), OF cran, of uncert. orig.; cf. CRENATE, CRANNY ]