Morder el Polvo 

Bite the dust, click on the image to watch a video by the Pussy Cat Dolls, «Bite the dust»

Meaning:

Somebody who bites the dust is that one who either has died or who has been unsuccessful in getting a goal.

Bite the dust, click on the image to get ethymological information about the expression

Origin:

This expression was firstly used in the Iliad. In it, Homer describes how many warriors who were defeated fell to the earth as a heavy sack. They hit their faces on the ground. Consequently, they bit the dust. When the bodies were taken away to bury, their faces had dust in their mouths. Nowadays, a person bites the dust not because he/she has died  but as a signal of being defeated.

Bite the dust, click on the image to listen to Queen´s, «Another one bites the dust»

Example:

Bite the dust, click on the image to watch Lego Video, «Another one bites the dust» by Queen