Dictionary.net

d[=i]v'ing-bel, n. a hollow vessel or chamber, originally bell-shaped, open at the bottom and supplied with air by a tube from above, in which one may descend into and work under water.--n. DIV'ING-DRESS, the water-tight costume of a diver, with special provision for receiving air, &c. [See DIVE.]

n. A hollow vessel, sometimes bell-shaped, so contrived as to enable persons to descend into deep water, and while under water furnished with fresh air by means of a flexible pipe.