sawtooth

noun6

1. •
   A tooth of a saw: any of its series of projections, each with a cutting edge.
2. •
   A sawtooth wave.
3. •
   [before a noun] Something else that is shaped like such a tooth (for example, a roof or each peaked portion thereof; a curve or waveform on a graph).
4. •
   A pattern whose living cell population reaches new peaks infinitely many times before dropping to a fixed value after each peak.
5. •
   The military barracuda, Sphyraena putnamae.
6. •
   Any of various pierid butterflies of the genus Prioneris.