noun
plural sponges
[count] :a piece of light natural or artificial material that becomes soft when it is wet, is able to take in and hold liquid, and is used for washing or cleaning
[count] :a type of sea animal from which natural sponges are made
[count, noncount] Brit :sponge cake
[count] informal + disapproving :someone who gets something from someone else without doing or paying anything in return :sponger
[count] :a device like a sponge that is used by women to prevent pregnancy
verb
sponges; sponged; sponging
[+ obj] to clean or wipe (something) with a sponge
to put (paint) on a surface with a sponge
informal + disapproving :to get money, food, etc., from (someone) without doing or paying anything in return [+ obj]