{"era":"current","word":"valentine","meaning":"A card sent to a loved one on Valentine's Day.","children":[{"era":"Middle Ages","word":"Saint Valentine","meaning":"name of a Roman saint","children":[{"era":"classical","word":"Valentinus","meaning":"a Roman cognomen","children":[{"era":"classical","word":"valens","meaning":"strong, healthy","children":[{"era":"classical","word":"valere","meaning":"to be strong, well","children":[{"era":"pre-3000 BCE","word":"*wal-","meaning":"to be strong","children":[],"language":"Proto-Indo-European"}],"language":"Latin"}],"language":"Latin"}],"language":"Latin"}],"language":"English"}],"language":"Modern English"}