{"era":"current","word":"mailman","meaning":"a person who delivers mail","children":[{"era":"17th Century","word":"mail","meaning":"letters or parcels conveyed by a postal system","children":[{"era":"12th Century","word":"male","meaning":"bag, wallet, pack","children":[],"language":"Old French"}],"language":"English"},{"era":"Old English","word":"man","meaning":"a human being","children":[],"language":"English"}],"language":"Modern English"}