off ‧ shoot /ˈɒfʃuːt $ ˈɒːf-/ BrE AmE noun [countable]
1 . something such as an organization which has developed from a larger or earlier one
offshoot of
The company was originally an offshoot of Bell Telephones.
the Mafia and its offshoots
2 . a new stem or branch on a plant