{"era":"current","word":"doorknob","meaning":"a rounded handle attached to a door that turns to unlatch it","children":[{"era":"pre-1100","word":"door","meaning":"an opening closure at an entrance","children":[{"era":"pre-1100","word":"*durz","meaning":"door","children":[],"language":"Proto-Germanic"}],"language":"Old English"},{"era":"1200s","word":"knob","meaning":"a rounded lump or handle","children":[{"era":"1200s","word":"knobbe","meaning":"a rounded protuberance","children":[],"language":"Middle English"}],"language":"Middle English"}],"language":"Modern English"}