char-à-banc

Or char·a·banc

[shar-uh-bang, -bangk, sha-ra-bahn]

noun

British.

plural

char-à-bancs 

1. a large bus used on sightseeing tours, especially one with open sides and no center aisle.

Word History and Origins

Origin of char-à-banc¹

1810–20; back formation from French char-à-bancs literally, car with benches, the -s being taken as plural ending of word as a whole