saw-toothed

But afterwards three of their Companie were slaine, who in seeking food for life, found death at the hand of naked Sauages, whose weapons were Saw-toothed Darts, which if they entred, must be cut out of the flesh.

1625, Samuel Purchas, chapter 5, in Purchas his Pilgrimes, volume 1, book 2, London: Henry Fetherstone, page 79

Craning our necks, we could see that what we had taken for the shore-line on that side was actually a high, thin, saw-toothed ledge of rock […]

1929, Dashiell Hammett, chapter 17, in The Dain Curse, New York: Vintage, published 1972, page 149

To the south the landscape changes and the gradient profile immediately becomes saw-toothed, as the line rises and falls with the rolling undulations of this rich farming countryside; [...].

1961 January, G. H. Robin, “Resorts for Railfans - 32: Ayr”, in Trains Illustrated, page 49

Hours later, having brought in the yellow raft laden with supplies to the green shore, then hidden them in the saw-toothed tall grass, an exhausted Cohn followed Buz into the forest.

1982, Bernard Malamud, “The Flood”, in God’s Grace, New York: Avon, published 1983, page 31