n. a district in Montreal, on the western slope of Mount Royal, long favored by wealthy English-speaking Montrealers.
- 1916  While other money barons of Montreal build modern castles in Westmount, Macdonald kept his terrace. . . .
- 1962  In Canadian, Westmount, n., means that part of English Montreal that once dominated much of the country's economy and still dominates most of Quebec's.