The Elves in Eregion led by Celebrimbor in the Second Age, translated “People of the Jewel Smiths” (S/286). This name is a combination of gwaith “people”, the elided plural definite article of i “the” and the plural of otherwise unattested mírdan “jewel smith” (SA/gwaith, mîr).
proper name. People of the Jewel Smiths
Word Gloss gwaith “people; region, people, [ᴱN.] men, folk; [N.] manhood; man-power, troop of able bodied men, host, regiment; [S.] region” i “the” mírdan “jewel smith”