{"era":"current","word":"plateau","meaning":"A broad level expanse of high land, or a relatively stable level after a rise.","children":[{"era":"1300s","word":"plateau","meaning":"A small plate or flat object; the source form borrowed into English.","children":[{"era":"pre-1100","word":"plat","meaning":"flat.","children":[{"era":"prehistoric","word":"*pleth₂-","meaning":"flat; spread out.","children":[],"language":"Proto-Indo-European"}],"language":"Old French"}],"language":"French"}],"language":"Modern English"}