牵引 covers two main clusters of meaning: physical pulling (to tow, to haul, to draw) and figurative involvement (to implicate, to drag someone into trouble). The physical sense is common in mechanical and medical contexts (牵引车 'tractor', 牵引力 'tractive force'), while the figurative sense often appears in legal or personal trouble scenarios, similar to 牵涉 or 牵连.