a friendship that transforms into a familial bond where participants support each other in the fashion of a family member and are seen as apart of one’s own family
friend 1: How would you consider our relationship?
friend 2: We are like best friends. I’d consider us in a broskiship!
friend 1: Yessir!! You should move in with my family.
"Dude did you hear the fucking brossip? Umphrey's is coming to Wisconsin this summer...worrrrrd duuuude! Fucking chill. Lets go buy some Sconnie shirts to wear to the show."
A general measurement of how much of a boss a bro is. Can be in regards to alcoholtolerance, success with the ladies, and/or athletic ability. Primarily dected by use of either a keg of natty ice or a bossometer.
Dude after last nights insane bash the crew team's collective bossisity has got to be a solid 9.4.