<Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> Tines or prongs or teeth are parallel or branching spikes forming parts of a tool or natural object . They are used to spear, hook, move or otherwise act on other objects . They may be made of metal, wood, bone or other hard, strong materials . </P> <P> The number of tines (also written tynes) on tools varies widely--a pitchfork may have just two, a garden fork may have four, and a rake or harrow many . Tines may be blunt, such as those on a fork used as an eating utensil; or sharp, as on a pitchfork; or even barbed, as on a trident . The terms "tine" and "prong" are mostly interchangeable . A tooth of a comb is a tine . </P> <P> Tines and prongs occur in nature--for example, forming the branched bony antlers of deer or the forked horns of pronghorn antelopes . The term "tine" is also used for mountains, such as the fictional Silvertine in The Lord of the Rings . </P>

What do you call the spikes on a fork