1 definition by BlazerMan

Top Definition
A glass downstem with drilled or laser-cut holes at the bottom in order to increase bubbling to further cool the smoke. Used in a bong.
John: I got an ash-catch for my bong, and a new downstem.
Bill: Is it a diffused downstem?
John: Of course, you think I'm crazed?
#glass #down #stem #downstem #diffused #bong
by BlazerMan November 09, 2007
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