Knock-outKnock"-out`\, a. That knocks out; characterized by knocking out; as, a knock-out blow; a knock-out key for knocking out a drill from a collet.
Knock-outKnock"-out`\, n. Act of knocking out, or state of being knocked out.
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|