1888, "traveling by omnibus," verbal noun from bus (v.)). From 1965 as "forced integration of schools by transporting children to different areas."
Entries linking to busing
bus v.
1838, "to travel by omnibus," from bus (n.). The transitive meaning "transport students to integrate schools" is from 1961, American English. The meaning "clear tables in a restaurant" is by 1892, probably from the use of the noun in reference to four-wheeled carts used to carry dishes. Related: Bused; busing.