{"era":"current","word":"laboratory","meaning":"a place for scientific experimentation","children":[{"era":"1500s","word":"laboratory","meaning":"a workshop for alchemists","children":[{"era":"500s","word":"laboratorium","meaning":"a place for work or toil","children":[{"era":"classical","word":"laborare","meaning":"to work, toil","children":[{"era":"classical","word":"labor","meaning":"work, toil, exertion","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Late Latin"}],"language":"Middle English"}],"language":"Modern English"}