Sindarin 

ioreth

feminine name. Old Woman

An old woman from Minas Tirith (LotR/860), her name was translated “Old Woman”, a combination of the prefixal form ior- of iaur “old” and the feminine suffix -eth (RC/579).

Conceptual Development: In Lord of the Rings drafts from the 1940s, this name first appeared as N. Yoreth (WR/386), but this was probably just a variant spelling rather than a real difference in the name.

Elements

WordGloss
iaur“old, old; [N.] ancient, olden”
-eth“feminine ending”
Sindarin [LotR/1114; LotRI/Ioreth; RC/579] Group: Eldamo. Published by

Ioreth

Ioreth

Ioreth means "old woman" in Sindarin; iaur "old" plus feminine ending -eth. In draft, Tolkien had spelt her name Yoreth. Like "Gamling", it was specifically chosen to suit the character of the old nurse.

Sindarin [Tolkien Gateway] Published by