When a person has no friends and therefore stays at home on their own. It derives from the term, "billy no mates".
by Sam Hornbrook September 17, 2008

A tall, strong, smart, great-looking football player that goes a little overboard when he likes someone. The girl he likes never likes him back. Usually gets really upset when that happens because when something doesn't go his way he can always take matters into his own hands and fix it. With girls, its as simple as they don't like him and he has to deal with it.
Britt: Hey look. Is that Billy over there?
Dani: Yeah, I think so.
Britt: You two should go out sometime, you look like you'd be a good couple and I heard he really likes you.
Dani: I don't think so. I just want to be friends.
Dani: Yeah, I think so.
Britt: You two should go out sometime, you look like you'd be a good couple and I heard he really likes you.
Dani: I don't think so. I just want to be friends.
by Mr. * May 9, 2011

A anal pounder that licks the windows of the office while staring at forest fires. Has been know to be a switch hitter on the sexual perspective
that person is such a Billy
by forester boy December 19, 2011

A Billy is a lost boy who #cantstopwontstop. Similar in stature to a baby goat, these boys flail hard and don't like white bitches.
by Ve12itas June 26, 2017

if you are friends with a Billie she will be the best friend you ever have. Girls named Billie are often strong willed and loyal and will always help you out.
by teeheeiknowall666 September 3, 2020

Person A: did you see ____'s outfit, she looks like a nun, her boyfriend won't even let her show her ankles
Person B: god I know, he's such a billy
Person B: god I know, he's such a billy
by LemonyLovecraft December 5, 2018

To basically, call someone a homie without ever knowing or seeing them before. Especially used in online video games
Woah watch out billie there are enemies approaching, or (when the person gets all the kills) good shit billie
by Leviathan223 March 21, 2019
