DCHP-1 Online
roto-threshing 
n. threshing with a roto-thresh.
- 1964 Their new system is called "roto-threshing" and 12 years of field tests and structural alterations prove that it works.
- 1964 Their new system is called "roto-threshing" and 12 years of field tests and structural alterations prove that it works.