Hastings' Dictionary of the Bible (1898)
SPONGE, a submarine substance, composed of fibres interwoven in a surprising manner, and surrounded by thin membranes, which arrange themselves in a cellular form. Matt 27:48. It absorbs a great quantity of fluid, and parts with it upon a strong pressure. Drink could be easily conveyed in this form where cups could not be used. This substance is inhabited by animals, like the coral, who use the openings of the sponge to suck in and throw out
water.