Sponge

1. To cleanse or wipe with a sponge; as, to sponge a slate or a cannon; to wet with a sponge; as, to sponge cloth.
2. Any spongelike substance.
3. Any one of numerous species of Spongiae, or Porifera. See Illust. and Note under Spongiae.
4. To suck in, or imbile, as a sponge.
5. To wipe out with a sponge, as letters or writing; to efface; to destroy all trace of.
6. Fig.: To deprive of something by imposition.
7. One who lives upon others; a pertinaceous and indolent dependent; a parasite; a sponger.
8. The elastic fibrous skeleton of many species of horny Spongiae (keratosa), used for many purposes, especially the varieties of the genus Spongia. The most valuable sponges are found in the Mediterranean and the Red Sea, and on the coasts of Florida and the West Indies.
9. A mop for cleaning the bore of a cannon after a discharge. It consists of a cylinder of wood, covered with sheepskin with the wool on, or cloth with a heavy looped nap, and having a handle, or staff.
10. Iron from the puddling furnace, in a pasty condition.
11. Iron ore, in masses, reduced but not melted or worked.
12. The extremity, or point, of a horseshoe, answering to the heel.
13. Fig.: To gain by mean arts, by intrusion, or hanging on; as, an idler sponges on his neighbor.
14. To be converted, as dough, into a light, spongy mass by the agency of yeast, or leaven.
15. Dough before it is kneaded and formed into loaves, and after it is converted into a light, spongy mass by the agency of the yeast or leaven.
16. Fig.: To get by imposition or mean arts without cost; as, to sponge a breakfast.