I. ˈkren ə l noun
also cre·nelle krə̇ˈnel
( -s )
Etymology: Middle French crenel, from Old French, diminutive of cren notch, from crener to notch, from Medieval Latin crenare, from (assumed) Vulgar Latin crinare to split, perhaps of Celtic origin; akin to Old Irish criathar sieve; akin to Greek krinein to separate — more at certain
: one of the embrasures alternating with merlons in a battlement — see battlement illustration
II. transitive verb
( creneled or crenelled ; creneled or crenelled ; creneling or crenelling ˈkren( ə )liŋ ; crenels )
Etymology: French créneler, from Old French creneler, from crenel
: crenellate