BRAS D’OR, a landlocked and tideless gulf or lake of high irregular outline, 50 m. long by 20 m. broad, almost separating Cape Breton Island (province of Nova Scotia, Canada) into two parts. A ship canal across the isthmus (about 1 m. wide) completes the severance of the island. The entrance to the gulf is on the N.E. coast of the island, and it is connected with the Atlantic by the Great and Little Bras d’Or channels, which are divided by Boulardeire Island. One channel is 25 m. long and from 14 m. to 3 m. broad, but is of little depth, the other (used by shipping) is 22 m. long, 1 to 112 m. wide, and has a depth of 60 fathoms. The gulf or lake is itself divided into two basins, the inner waters being known as the Great Bras d’Or Lake. The waters are generally from 12 to 60 fathoms deep, but in the outer basin (known as the Little Bras d’Or Lake) are soundings said to reach nearly 700 ft. The shores of the gulf are very picturesque and well wooded and have attracted many tourists. Sea fishing (cod, mackerel, &c.) is the chief industry. The name is said to be a corruption of an Indian word, but it assumed its present form during the French occupation of Cape Breton Island.