wagon train is a noun meaning "a procession (of wagons or mules or camels) traveling together in single file". It carries one recorded sense.
a procession (of wagons or mules or camels) traveling together in single file
“we were part of a caravan of almost a thousand camels”
“they joined the wagon train for safety”
Definitions, synonyms and semantic relations for wagon train come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.