*bhreg-

The core idea of this root was:

breaking

It’s quite visible in words like break, brake and breach, but it’s also the origin of the Latin frangere (to break).

Here’s a little overview over that branch of the family. I think you can see the notion of breaking in all of them :)

• fragile, frail
• fragment, fragmentation
• defray
• fracture
• fractal 
• fraction
• infringe
• suffrage