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1.
A term of endearment for the "Plumbers Crack"
Check out the Plumbum on that guy!
by Happy_007 March 17, 2006
 
2.
The Latin word for the element Lead (Pb)
What you call a fat person
Plumbum is the Latin word for Lead(Pb).
That whale is such a plumbum.
Even chubby people are plumbums.
by XeNe245 September 21, 2013
 
3.
1. The original Latin noun for Lead, which the atomic symbol Pl (for lead) is derived from.

2. Somebody who has permanent plumber's crack.
1. Mmmm, plumbum paint chips...

2. Jeez, that guy always has plumber's crack. It must suck to have a plumbum.
by Scotto the Great October 24, 2006
 
4.
A loser.
"No, he's a friggen plumbum."
by Lauden from Alaska December 03, 2008
 
5.
Ravaging around with no regard for anything or anyone.
When panda rushes 3 htp members with a dgl, knowing they have navies and colts.
by panda December 21, 2004
 
6.
latin 4 lead
pencils are not made of plumbum any more
by chody November 29, 2003