1. The emotion a bro feels when he spends too much time without other bros.
2. When a bro gets dissed by his bro-ho and he's all solo.
Biff: <calls Todd> Hey bro, I'm at this party in the OC and I'm like, the only guy here in a Famous Stars and Straps shirt and a lifted truck. I feel so bronely!
Todd: Ah brah, man...that sucks! You should come back to the 909 and hang with the Skin Industries crew!
Buffy: <calls Biff> Biff, I found a better bro with a higher lift on his bro-6 F-150. I'm leaving you for him.
Biff: WHAAAAT? You can't leave me Buffy, I'll be bronely!
1) A bro's special writings to his favorite bro-ho
2) The emotion a bro feels when something touches him. Like when another bro gets married, has a child, or gets a new lift kit for his off bro-d vehicle
Biff: The way Buffy flung her hair around was almost, broetic