That knife has a serrated blade.
Maple leaves have serrated edges.
They are herbaceous perennials, generally with hairy serrated leaves and handsome flowers.
The leaves are large, with finely acute and serrated lobes, affording abundant shade.
The jaw has serrated gripping edges for delicate work.
In coins the " milling is the serrated edge, called " crenneling " by John Evelyn (Discourse on Medals, 1697, p. 225), which is formed on them to prevent clipping and filing.