/ˈhɪtʃhaɪk/ verb
[ v ] to travel by asking for free rides in other people's cars, by standing at the side of the road and trying to get passing cars to stop :
They hitchhiked around Europe.
—see also hitch
► hitchhiker (also hitch·er / ˈhɪtʃə(r); NAmE /) noun :
He picked up two hitchhikers on the road to Bristol.