GNU Collaborative International Dictionary of English

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1.       
   Crenelate , v. t. [imp. & p. p. Crenelated ; p. pr. & vb. n. Crenelating .] [LL.  crenellare, kernellare: cf. F.  crneler to indent. See Crenelle.] [Written also crenellate.]
   To furnish with crenelles.
   1913 Webster
   To indent; to notch; as, a crenelated leaf.
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   Crenelated molding (Arch.), a kind of indented molding used in Norman buildings.
   1913 Webster