Definitions for offshootˈɔfˌʃut, ˈɒf-
Random House Webster's College Dictionary
a branch or lateral shoot from a main stem, as of a plant.
anything conceived of as springing or proceeding from a main stock.
Origin of offshoot:
outgrowth, branch, offshoot, offset(noun)
a natural consequence of development
That which shoots off or separates from a main stem, channel, family, race, etc.; as, the offshoots of a tree.