An abbreviation for Bitch Owning Shawty. Refers to a beautiful sexy woman that dominates one of more guys.
He will do anything Niranjana tells him do do because she is his BOS.
by H-Town Pup July 21, 2010
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Meaning 'Boyfriend-over-Shoulder' :
1.When you are texting someone and your boyfriend is being cheeky so you tell them 'BOS' to warn them, usually signifying that you are talking about something you don'twant your boyfriend to see, or he's doing something to distract you (kissing you everywhere; doing anything he can to lure your attention away) from conversing.

2.Can also mean when a boyfriend is completely nonchalant about public displays of affection (usually right in front of people; mostly a term for posessive/insistent boyfriends because it's their way of showing affection, trying to gain more of your attention and constantly let you know they are there).

3.When someone's in a mood and you're trying to do important stuff, but there he is at your neck and ear, wandering hands- The works. Basically urging you to reciprocate.
'Sorry, can't talk.'

While we were talking to her, he had a huge case of BOS the whole entire time- It was really adorable.

Well, there goes any chance of trying to finish my assignments with him BOSing like that.
by BoredWolf.LonelySheep August 19, 2013
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Bong, large object used to smoke marijuana.
stoof the bos. bosman, bosology, gotta bos? gotta tos? nah? peace.
by LisaJoe October 18, 2006
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the group known as the brother hood of steel is a group of men following the leader known as elder Maxson. the men can usually be found in giant metal suits of armor known as power armor. they have been in las vegas, Washington dc, and boston. they have been reported helpful to society they help people get food, water and recover valuable technology from dangerous people. there biggest victory yet is destroying both the enclave and the Institute both groups that are what they call "cleansing the land" the enclave had made a virus called the FEV virus and the Institute is a group that replace humans with machines called "synths" the group has gone under cover and is planning there next journey to west Virginia
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by xerxes griffen August 10, 2018
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A misspelling of 'boss' (Pronounced ('bĂĄz' or 'bahz'). Commonly used similarly to 'lit'.
"Last night was bos bruv."
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by ausernamebruv December 10, 2017
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