{"era":"current","word":"standby","meaning":"something kept ready for immediate use or replacement","children":[{"era":"early modern","word":"stand by","meaning":"to remain ready or available","children":[{"era":"pre-1100","word":"stand","meaning":"to remain upright or in place","children":[],"language":"Old English"},{"era":"pre-1100","word":"by","meaning":"near; beside","children":[],"language":"Old English"}],"language":"English"}],"language":"Modern English"}