[fric.tion] n [ME, fr. MF or L; MF, fr. L friction-, frictio, fr. fricare to rub; akin to L friare to crumble, and perh. to Skt bhrinanti they injure] (1704) 1 a: the rubbing of one body against another b: the force that resists relative motion between two bodies in contact
2: the clashing between two persons or parties of opposed views: disagreement -- fric.tion.less adj -- fric.tion.less.ly adv