VITALS

vitals. Vitals, n. pl. parts essential to life, essence

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Vi″tals (?), n. pl. 1. 1. Organs that are necessary for life; more especially, the heart, lungs, and brain.
2. 2. Fig.: The part essential to the life or health of anything; as, the vitals of a state. “The vitals of the public body.” Glanvill.