a city and port of entry of Ontario, Canada, and capital of Perth (disambiguation)|Perth county, situated 83 m. W.S.W. of Toronto by the Grand Trunk railway, on the Avon river. Pop. (1901), 9959. The repair and engineering shops of the railway, flour-, sawand woollen-mills, engine and agricultural implement works are the principal industries. A large export trade in cheese and other dairy and farm produce is carried on.