Top Definition
4b2
The unit for the psychiatric ward at Tripler Army Medical Center, in Honolulu Hawaii.
The term "4b2" is used in context for someone sent to the psych ward for mental breakdown, or more commonly, for alcohol detox. It is the military equivalent of 51-50 in Hawaii.
"They 4b2'ed him after he ran around base drunk."
"He's a 4b2'er, watch out."
"He wasn't well after he got back, so they sent him to 4b2."
"He wasn't wearing any chevron's, so we knew he had just come from 4b2."
"He's a fellow 4b2'er, we're all nuts man."
by Trisarf-grad September 11, 2009
1 more definition
4B2
Jew
Block Of Wood 4" by 2"
Filthy Rotten 4B2
by Zyklon-B October 01, 2003

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