Top definition
What two bros in a bromance call eachother. Not to be confused with a homosexual relationship, using this term signifies a strong friendship between two completely straight males. Significant brothers have love for eachother but are not in love with eachother.
Girl: Are you gay?
Bro: Nah, I just have a significant brother.

Some Kid: Do you know Sean?
Some Bro: Know him? Bro, He's my significant brother!
by BigMac12 September 09, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
2
A committed partner in a long-term bromance.
Dirk: Hey, you wanna go to the bar tonight?

Lewis: Maybe but I'll have to check with my significant brother first.
by mommysdirtypillows October 19, 2009
Mug icon

Donkey Punch Plush

10" high plush doll.

Buy the plush