1 definition by captainBDChammer

A large garbage can that has had the bottom modified to be able to hold a large bowl of atleast an ounce of weed.

You then place the upside down garbage can on top of a swimming pool. while someone holds it stable. someone else swims underneath the trash can and breaths pure refreshing ganja.

This is called a dank tank.
Dude, come over tonight and we'll blaze up the Dank Tank in my pool.
by captainBDChammer April 16, 2011
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