rotate

verb

1. turn on or around an axis or a center"The Earth revolves around the Sun"
2. exchange on a regular basis"We rotate the lead soprano every night"
3. perform a job or duty on a rotating basis"Interns have to rotate for a few months"
4. cause to turn on an axis or center"Rotate the handle"
5. turn outward"These birds can splay out their toes"
6. plant or grow in a fixed cyclic order of succession"We rotate the crops so as to maximize the use of the soil"