round trip noun
plural ∼ trips [count] : a trip to a place and back usually over the same route
▪ It's a 50-mile round trip to my parents' house.
▪ It's a 50-mile round trip to my parents' house.
— round trip adverb, US
▪ The drive is 50 miles round trip.
▪ The drive is 50 miles round trip.
— round–trip 
/ˈraʊndˌtrɪp/ adjective always used before a noun US
▪ a round-trip ticket [=(Brit) return]
/ˈraʊndˌtrɪp/ adjective always used before a noun US ▪ a round-trip ticket [=(Brit) return]
