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3.
-slang. Army officer or cadet that is/has attended the United States Military Academy at West Point. Usually negative.
"That Lieutenant is such an asshole."
"Dude, he's a willy peter."
"Oh. That explains it."
by LTDan February 02, 2008
 
1.
White Phosphorus, given the name Willy Peter in Vietnam also used in the book "Fallen Angels"(about the Vietnam war). Usually used as a name rather than an object. Willy Peter was usually used in artillery shells to clear sections of forests rife with Congs. White Phosphorus also eats through skin which made it incredibly painful for the enemy and the shells also acted as fragmentation explosives.
"I'm calling in Willy Peter!"
"Who's Willy Peter?"
"Noob!"
by kkid28 February 08, 2007
 
2.
willy peter. White Phospherous. used alot during the vietnam war. white hot peices of metal in a can. uasually dropped from a jet.
" Get some fucking willy peter on that tree line!"
by NYCBudda October 28, 2006