A contest held between two or more competitors in which a set amount of beer is ingested by all competitors at regular intervals, usually one beer/minute. A competitor is declared "out" when he or she vomits. The last competitor to have not vomited is the winner. One-on-one domes are usually announced by chants of "Two men enter, one man leaves."
May also be used to refer to the act of participating in a dome.
"I won the dome last night by drinking 13 beers in 13 minutes."
"Did you see those guys doming last night?"