Shakespeare's King Lear, talking about his daughter, Goneril.
King Lear. "... how sharper than a serpent's tooth it is to have a thankless child."
a chisel shaped tooth is a tooth that is sharper than your other teeth. an example of a chisel shaped tooth is your incisor.
The Powers That Be - 1992 How Sharper Than a Servant's Tooth 2-4 was released on: USA: 21 November 1992
Baretta - 1975 Sharper Than a Serpent's Tooth 2-13 was released on: USA: 17 December 1975
Julia - 1968 How Sharper Than a Baby's Tooth 1-16 was released on: USA: 7 January 1969
Betrayal - 2013 Sharper Than a Serpent's Tooth... - 1.12 was released on: USA: 12 January 2014 Portugal: 17 February 2014
Betrayal - 2013 Sharper Than a Serpent's Tooth--- 1-12 was released on: USA: 12 January 2014 Portugal: 17 February 2014
Diamonds aren't always sharper, but they can be manufactured in such a way. Diamonds are harder than steel.
You can have as many wave serpents as you can afford but they may only be taken as dedicated transports for your infintry
There are swords that are known to be sharper than a Katana, such as the Damascus steel sword or the Ulfberht sword. These swords are crafted using different techniques and materials that can create a sharper edge than that of a traditional Katana.
The metaphor "sharper than a number two pencil" means that someone is smart or fast-acting.