{"era":"current","word":"ballroom","meaning":"a large room designed for formal dancing","children":[{"era":"1300s","word":"ball","meaning":"a formal dance or dancing event","children":[{"era":"1200s","word":"bal","meaning":"dance; formal dance gathering","children":[{"era":"classical","word":"ballare","meaning":"to dance","children":[],"language":"Latin"}],"language":"French"}],"language":"English/French"},{"era":"pre-1100","word":"room","meaning":"an enclosed space in a building","children":[{"era":"pre-1100","word":"rūm","meaning":"space; extent; room","children":[],"language":"Old English"}],"language":"English"}],"language":"Modern English"}