noun
hitchhiker; person who catches a ride
Refers to someone who gets a free ride in someone else's vehicle, typically by thumbing a lift. The cross-reference to ヒッチハイカー suggests a similar meaning.
See also: ヒッチハイカー
高速道路の入り口で便乗者が親指を立てていた。
A hitchhiker was sticking out their thumb at the highway entrance.
彼は旅費を節
He traveled as a hitchhiker to save on travel expenses.