{"era":"current","word":"knockout","meaning":"a blow or result that ends a contest by incapacitating someone","children":[{"era":"1800s","word":"knock out","meaning":"to strike so as to incapacitate","children":[{"era":"Middle English","word":"knock","meaning":"to strike sharply; an imitative verb","children":[],"language":"English"},{"era":"pre-1100","word":"out","meaning":"to the outside; away; fully complete","children":[],"language":"Old English"}],"language":"English"}],"language":"Modern English"}