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1.
To be hurt or killed by an explosion intended to destroy a wall, floor or ceiling. It is a reference to the YouTuber Ethoslab, who enjoys "breaching" rooms using TNT within the videogame Minecraft. This technique often results in anyone in the immediate vicinity being hurt.
Yeah, we blew up a wall and etho'd several people on the other side.

Hah! He got etho'd! Serves him right!
by IllogicalBeans June 02, 2013
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