True friends who know and understand one another, even despite occasional fits of hormonal rage.

See also deep dawg.
Nathan and Clare were bosom buddies, even during their synchronised hormone fluctuation cycles.
by lols-royce May 24, 2010
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The act of a male slapping breast so hard that they fly up and hit the female in the face.
LOL YOU JUST GOT DOUBLE SLAPPED, BAI MY POKEMON! Maybe i should be called Bosom Basher
by Ringtailedslasher May 12, 2011
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In which a woman guides your head down to her breasts in a hug for ultimate comfort. Usually this is a sign of platonic affection, and cheers people up immensely.
Chloe guided me down for a bosom hug, it made me feel all warm and fuzzy.

George guided my head down for a bosom hug, it was slightly awkward, I wish he had a bosom.
by Queen Frufalumps May 18, 2014
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Someone who loves extremely fat and/or flabby breasts or chests, can be either male or female.
"Wow, she's hot bro."
(friend looks over to see a large and very flabby woman with extremely flabby breasts)
"You're such a bosom turkey."
by ovechkinrockssox March 6, 2008
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Two female who have became best of friends. Best female friend.
This term was used back in the 80's to discribe friendship between two women. But now in the 21st century its replaced with Best Friend Forever (BFF) or Best Friend (BF).
I can't wait to bosom to see my bosom buddie, we were so close as youngins.

Me and her were bosom buddies in high school.
My bosom buddy is getting married.
by Sherekay October 10, 2010
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"After that situation we become bosom pals"
by WhiteNejt March 20, 2016
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