(1):

(v. i.) To move in a curved path round a center; as, the planets revolve round the sun.

(2):

(v. i.) To pass in cycles; as, the centuries revolve.

(3):

(v. i.) To return; to pass.

(4):

(v. i.) To turn or roll round on, or as on, an axis, like a wheel; to rotate, - which is the more specific word in this sense.

(5):

(v. t.) To cause to turn, as on an axis.

(6):

(v. t.) Hence, to turn over and over in the mind; to reflect repeatedly upon; to consider all aspects of.