Learner's definition of TRACTION
[noncount]
1
a : the force that causes a moving thing to stick against the surface it is moving along附着摩擦力 b : the power that is used to pull something牵引力;拉力 2
medical : a way of treating broken bones in which a device gently pulls the bones back into place(治疗骨折的)牵引术 3
informal : the support, interest, etc., that is needed for something to succeed or make progress(成功、进步所需的)支持,关注