The floating leaves have undulating edges that give them a crenellate appearance.
From the en.wikipedia.org
He politely obtained a licence from King Edward I to crenellate his house at Bungay.
From the edp24.co.uk
Licenses to crenellate granted permission for a person to fortify a site.
From the en.wikipedia.org
In 1438, Ioan ap Gruffudd was granted a licence to crenellate and he founded the stone castle and added a tower house.
From the en.wikipedia.org
After being granted a royal licence to crenellate it the Duke, much against local wishes, converted 1,000 acres of good arable land around Thornbury into parkland, part of his private country estate.
From the thisisbristol.co.uk
More examples
Crenel: supply with battlements
(crenellation) battlement: a rampart built around the top of a castle with regular gaps for firing arrows or guns
A battlement (also called a crenellation) in defensive architecture such as that of city walls or castles, comprises a parapet (i.e. a short wall), in which portions have been cut out at intervals to allow the discharge of arrows or other missiles. ...
To furnish with crenelles; To indent; to notch
(crenellated) Having crenellations or battlements; Having a series of square indentations
(crenellation) A pattern along the top of a parapet (fortified wall), most often in the form of multiple, regular, rectangular spaces in the top of the wall, through which arrows or other weaponry may be shot, especially as used in medieval European architecture; The act of crenellating; adding ...
(Crenellated) (cre'-nel-la-ted) An ordinary indented as with crenelles.
(Crenellated) Alternating indentations of a parapet. (Originally for defense, and for firing missiles through).
(Crenellated) Mouldings that are notched or indented in the form of battlements.