I. break‧a‧way¹ /ˈbreɪkəweɪ/ adjective
breakaway group/party/movement a breakaway group etc is formed by people who have left another group because of a disagreement:
a breakaway group of journalists
Hundreds of miners joined the breakaway union. ⇒ break away at break¹

[TahlilGaran] Dictionary of Contemporary English ▲

II. breakaway² noun [singular]

1. a situation in which some people leave a group or organization after a disagreement and start a new group or organization
breakaway from
He led a breakaway from the Communist Party.

2. a change from the usual or accepted way of doing something
breakaway from
His work marks a breakaway from traditional building styles.

[TahlilGaran] Dictionary of Contemporary English ▲