1. To wipe, mop up, or otherwise clean away something from some surface with or as with a sponge. In this usage, a noun or pronoun is used between "sponge" and "from." I sat beside her bed, sponging the sweat from her feverish brow. Dad's out back sponging the graffiti from the wall.

2. To obtain something, especially money or food, from another person, group, agency, country, etc., for free or without doing any work. In this usage, a noun or pronoun can be used between "sponge" and "from" to specify what is being obtained. The minute I had to go on social welfare, I felt like a bum who was sponging from the government. Tom's been sponging money from Mom and Dad for years. I don't know if he's ever held down a job for longer than a month at a time.