noun
plural -outs
[count] an occurrence in which a boxing match ends when a fighter has been knocked down by a punch and is unable to start fighting again before 10 seconds have passed
informal :a very attractive or appealing person or thing
adjective
always used before a noun
causing someone to become unconscious
informal :extremely attractive or appealing
Brit of a contest or competition :designed so that winning teams or players continue to play and losing teams or players do not
US