revolve

[1]	go around , spin , turn , rotate , pivot , rotate , gyrate , whirl , twirl , reel , wheel , go (a)round , circle , cycle , orbit , swivel
[2]	turn , orb , orbit , depend , pivot , rely
[3]	turn over (in one's mind) , roll , ponder , weigh , consider , meditate upon/on , think about , reflect upon/on , ruminate over/on , chew over , contemplate