Idun

Iðunn was one of the goddesses in Norse mythology. According to the Prose Edda, she was the custodian of apples that allowed the Æsir to maintain their eternal youthfulness. She was the wife of Bragi, god of poetry. As related in Haustlöng Iðunn was abducted with her apples by Þjazi, a jotun (giant) who used Loki as a stooge to lure Iðunn out of Ásgarðr. During her absence, the Æsir began to age without the rejuvenating qualities of her apples, prompting them to press Loki into the task of rescuing her. Borrowing Freyja's falcon skin, Loki retrieved Iðunn from Þrymheimr, transforming her into the form of a nut for the flight back. Þjazi, displeased, pursued them in the form of an eagle, but was defeated by having his wings set afire by a bonfire created by the Æsir.
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Noun
1. goddess of spring and wife of Bragi; guarded the apples that kept the gods eternally young
(synonym) Ithunn
(hypernym) Norse deity

[Norse] The goddess of eternal youth, married to Bragi, the god of poetry. Idun is the custodian of the golden apples of youth. When the gods feel old age approaching, they only have to eat of the apples to become young again. As a goddess of fertility, youth and death, it is possible that she was originally one of the Vanir. Idun was once abducted by the storm giant Thiazi and in this interval the gods began to age rapidly. She was eventually rescued by Loki who changed her into a nut and brought her back to her hall. The gods were restored to youth soon after.

Idun(n) (Icelandic, Scandinavian) [from id rejuvenation] Norse goddess of eternal youth; the oldest of the moon god Ivaldi's younger brood, representing the soul of the earth. Her spouse is Bragi, the patron and inspirer of bards. Idun is the guardian of the apples of immortality which she feeds the aesir (gods) daily (at each new cycle).