1 branch, spur; shoot, limb, bough, twig, stem, appendage, sucker, sprout, sprig, tendril, scion:
There is an offshoot of this road that goes up the hill. The offshoots are trained to grow along the arms of the espalier
2 descendant, relation, relative, kin, kindred, offspring, scion, heir:
One offshoot of the family later emigrated to the United States.
3 outgrowth, development, branch, spin-off; by-product, derivative:
An offshoot of the company manufactures optical instruments. The sale of gravel for concrete is an offshoot of our mining operations.