Definitions of rotate:

• verb:   cause to turn on an axis or center

  Example: "Rotate the handle"

• verb:   plant or grow in a fixed cyclic order of succession

  Example: "We rotate the crops so as to maximize the use of the soil"

• verb:   exchange on a regular basis

  Example: "We rotate the lead soprano every night"

• verb:   perform a job or duty on a rotating basis

  Example: "Interns have to rotate for a few months"

• verb:   turn on or around an axis or a center

  Example: "The lamb roast rotates on a spit over the fire"

• verb:   turn outward

  Example: "Ballet dancers can rotate their legs out by 90 degrees"