Top Definition
A place on the internet where you go just to check something out, then spend hours playing - like typing names into Urban Dictionary
I spent an hour elf bowling - it is a definite time sponge.
by Huntch March 09, 2010
Someone in the workplace who is either too lazy or too stupid to think for themselves, so they perpetually ask everyone else to help them with their problems - thereby soaking up other people's time .
Bob keeps asking me how to update the sales spreadsheet. Seriously, that guy is a real timesponge!
by Rhaphanidosis August 15, 2015
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