[Anglo-Saxon, sund]. An arm of the sea over the whole extent of which soundings may be obtained, as on the coasts of Norway and America.
Also, any deep bay formed and connected by reefs and sand-banks. On the shores of Scotland it means a narrow channel or strait. Also, the air-bladder of the cod, and generally the swimming-bladder or "soundes of any fysshes." Also, a cuttle-fish.