
(from the article `agriculture, origins of`) ...ears as the vehicle was pushed through the crop. The grain was threshed in the long-established way, by animals treading it on a firm floor, or by ...
Found on
http://www.britannica.com/eb/a-z/t/78

(Latin) wooden sled pulled over wheat to separate the chaff.
Found on
https://www.encyclo.co.uk/local/10135
No exact match found.