cren·e·lat·ed also cren·el·lat·ed (krěn'ə-lā'tĭd) adj.
Having battlements.
Indented; notched: a crenelated wall.
[Probably from French créneler, to furnish with battlements, from Old French crenel, crenelation, diminutive of cren, notch; see cranny.] cren'e·la'tion n.