- The act of making someone unconscious, or at least unable to come back on their feet within a certain period of time; a TKO.
#:The boxer scored a knockout on his opponent.
informal Something wildly popular, entertaining, or funny.
#:If you've ever had a sack race, you know it's a real knockout for kids and adults alike.
informal A very attractive person, especially a beautiful woman.
#*1995, Rhonda K. Reinholtz et al., "Sexual Discourse and Sexual Intercourse," in P. J. Kalbfleisch and M. J. Cody, eds., Gender, Power, and Communications in Human Relationships, p. 150,
#*:Phrases such as
"she bowled me over," "she's striking," and "she's a knockout" suggest that the woman affects the man in ways he cannot mediate or control.
- A partially punched opening meant for optional later removal.
#:They left a knockout in the panel for running extra wires someday.
genetics The deactivation of a particular gene.
printing An event where a foreground color causes a background color not to print.
trans-top|act of making someone unconscious
- Rendering someone unconscious.
#:He delivered a knockout blow.
- Stunning; amazing; gorgeous.
#:You should have seen her knockout eyes.
knock one's socks off
technical knockout, TKO