/ ˈkɒŋkɔːs; NAmE ˈkɑːŋkɔːrs/ noun
a large, open part of a public building, especially an airport or a train station :
the station concourse
••
WORD ORIGIN
late Middle English (originally referring to a crowd): from Old French concours , from Latin concursus , from concurs- run together, met, from the verb concurrere run together, assemble in crowds, from con- together with + currere to run. The current sense (originally US) dates from the mid 19th cent.