Removing Chaff From Grain Through Tossing

This page is the CodyCross answer for the clue below from Past and Present Tech, Group 1459, Puzzle 4 (Robot Vacuum).

Question is: Removing Chaff From Grain Through Tossing

and the answer is: WINNOWING

Word Meaning:

WINNOWING — The act of separating chaff from grain.

Definitions from Wiktionary.