Nectar

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mid 16th century (in nectar (sense 2)): via Latin from Greek nektar .

wiktionary

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From Latin nectar, from Ancient Greek νέκταρ(néktar, “nourishment of the gods”), from Proto-Indo-European *neḱ-(“perish, disappear”) + *-tr̥h₂(“overcoming”), from *terh₂-(“to overcome, pass through, cross over”).

etymonline

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nectar (n.)

1550s, from Latin nectar, from Greek nektar, name of the drink of the gods, which is perhaps an ancient Indo-European poetic compound of nek- "death" (from PIE root *nek- (1) "death") + -tar "overcoming," from PIE root *tere- (2) "cross over, pass through, overcome." Sense of "any delicious drink" is from 1580s. Meaning "sweet liquid in flowers" first recorded c. 1600.