a. The act of rubbing against or touching the body of an unsuspecting person, as in a crowd, to attain sexual gratification.

b. The act of consensual rubbing between two or more people, either clothed or unclothed, to attain sexual gratification.

a. A method of making a design by placing a piece of paper on top of an object and then rubbing over it, as with a pencil or charcoal.

b. A design so made.