SIDMOUTH, (Devon) on the Channel, bet. Lyme and Exmouth, 130 cm. 157 mm. from London, stands at the mouth of the r. Side. It del. anciently to the Abbey of Sion, and was a considerable port; but has been so choaked up by sands, that no ships of burden can get in; yet it remains one of the chief fisher-Ts. in the shire, and furnishes the E. parts of it with much provision.