{"era":"current","word":"staircase","meaning":"structure or enclosure containing stairs","children":[{"era":"current","word":"stair","meaning":"a step in a flight of steps","children":[{"era":"pre-1100","word":"stæger","meaning":"stair, staircase, flight of steps","children":[{"era":"pre-1100","word":"*staigri","meaning":"stair, step","children":[{"era":"prehistoric","word":"*steigh-","meaning":"to go, rise, stride, step, walk","children":[],"language":"Proto-Indo-European"}],"language":"Proto-Germanic"}],"language":"Old English"}],"language":"Modern English"},{"era":"current","word":"case","meaning":"frame; enclosure","children":[],"language":"Modern English"}],"language":"Modern English"}