Top definition
The brown fecal colour and flakes that appear around an anus.
When she bent over, Kyle could clearly see a ring of bumrust around her anus.
by jungletriad December 05, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
2
shit
basically dried poop stuck on an anis
bye you rusty little bumcrack.
Orlando was giving it to Ficklestean in the bum, he yelled, "I can see your bum rust!"
by karl55655 November 09, 2007
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug