[1] Whilst a relatively rare event, it is most often seen after close bouts in which one wrestler clearly had the advantage towards the end.
[5] The gyōji makes a decision as to the winner, which the judges, or any of the waiting wrestlers around the ring, are entitled to challenge.
If there is a challenge, the five judges step into the dohyō and have a mono-ii (talk about things) to discuss the match and the result.
[6] Their explanation is usually that the winning wrestler used a specific technique to overpower his opponent and was in clear control of the match.
By extension, this term is also a Japanese equivalent of the English idiom "lame duck".