traction
trac.tion \'trak-sh*n\ \-shn*l, -sh*n-*l\ n [NL traction-, tractio, fr. L tractus, pp.] 1: the act of drawing : the state of being drawn; also : the forc e exerted in drawing 2: the drawing of a vehicle by motive power; also : the motive powe r employed 3: the adhesive friction of a body on a surface on which it moves (as of a wheel on a rail) - trac.tion.al aj