Specifically, in ceramics, decorated with designs transferred to the ware by means of a piece of sponge cut in a pattern and dipped into the coloring preparation.
verb.
Simple past tense and past participle of sponge.
Word Usage
"Now and then she was successful in defying pain; but by some odd revenge of nature, what she learned in such circumstances was afterward wiped as completely from her memory as an old sum is sponged from a slate."