three-high

English

Noun

three-high (plural three-highs)

1. A series of three rollers in a roller mill, stacked one above the other.
   • 1896, Engineering Review, volume 4, page 169:

     For every section it is necessary to insert a special finishing roll in the stage lying next the large engine, while the three-highs in the other two stages contain the roughing rolls for all six profiles.