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despite the word sounding and literally basically being the beginning of 'penis', this word has nothing to do with your obscene love sword! Unless you wish to use it in modern day times, in which case it is indeed short for the word 'penis' and can be used as a fairly rude insult.

In reality, the word peen means the back of a hammer. You know, that one part of the hammer that's round and at the back? Yes, that part. It's not a penis. stop calling it that.

It's also called a ball-peen. It's still not a penis. Never will be. Unless your.... That guy.
Person: nice ball-peen, phil!
Phil : Yeah my dicks real nice ain't it?
Person: I was talking about your hammer.
Phil: That's stupid you're stupid stop saying thAT
Peen by Internet user 1078324 June 18, 2017
Related Words
Peen peenut peener peenu PEENI peenar peenie Peenk PEENOOSE Peenarse
The slang word for penis.
Hugh Hefner: today we celebrate 50 years of making guys all around the world stroke their peen

Barbara Walters: and that's when his peen went in my poon.. did I mention i'm a whore?

Star Jones: what do you mean my husband al has a peen fit for a tight boy's anus?
peen by steve May 23, 2008
my peen is very long
peen by MC Boonge August 13, 2003
Slang for the penis in it's flaccid state. Nobody like's a limp dick, so Peen is also used to describe a real jerk, or a dick.
That was a peen move Kevin, did you have to puke in tub?

or:

We were swimming... it was cold... and I went from dick to peen in five seconds!
Peen by boywonder769 January 20, 2009
An appliance or compartment which is artificially kept cool and used to store food and drink. Modern PEENs generally make use of the cooling effect produced when a volatile liquid is forced to evaporate in a sealed system in which it can be condensed back to liquid outside the PEEN.
Bob; Yo broski, I see you installed a new PEEN into your kitchen!
Chad; Yeah homeboy, look how large it is! It's going to be super useful for storing food!
PEEN by DontDoKids_DoDrugs March 5, 2020