"Bredrin" is the Rastafarian subdialect word for Brethren. With original religious implications, the word later took on the Bible definition of "brother". Hence, one who shares a common ancestry, allegiance, character, or purpose with another.
"Tied not by blood but by heart, we are bredrins for life!"
"Keepin' it vegan mi bredrin!"
To put in effort to befriend someone. The act of making a friend.
" There is a girl at my work that i have been trying to Bredrinate", "At first the girl in my science class did not like me. Now she is trying to bredrinate me"