millrun

noun

1. millrace.
2. a test of the mineral content or quality of a rock or ore consisting of the actual milling of a sample.
3. the mineral obtained by means of this test.

adjective

1. coming directly from a mill, especially without having been sorted: mill-run carpets.

noun

1. another name for millrace
2. mining
   1. the process of milling an ore or rock in order to determine the content or quality of the mineral
   2. the mineral so examined

adjective mill-run

3. mainly US (of commodities) taken straight from the production line; unsorted as to quality