be eating (someone's) dust

be eating (someone's) dust

mainly AMERICAN
In a competitive situation, if you are eating dust or are eating someone's dust, they are doing much better than you. Aladdin has proved to be the most successful animated film of all time, leaving blockbusters like Home Alone 2 eating its dust. Compared to other race games, this one is eating dust. Note: If you are riding behind another horse in a race, you have the dust kicked up by the other horse in your face.
See also: dust, eating