{"era":"current","word":"binding","meaning":"legally or morally obligatory; or a fastening cover","children":[{"era":"1200s-1500s","word":"binding","meaning":"tying or fastening","children":[{"era":"pre-1100","word":"bind","meaning":"to tie, fasten, or secure","children":[{"era":"pre-3000 BCE","word":"bendh-","meaning":"to bend or tie","children":[],"language":"Proto-Indo-European"}],"language":"Old English"}],"language":"Middle English"}],"language":"Modern English"}