§ Palath-ledin ’Gladden Field[s]’ (TI:114)
For palath ’iris, gladden’ see Palathrin above (1.15). The second element looks like the pluralized Noldorin adjective lhaden ’open, cleared’ > pl. lhedin (LAT-). But this makes little sense, especially because palath is clearly singular. A better interpretation could be that the stem LAT- ’lie open’ yields Ilk. *lad ’plain, field’, which is then regularly pluralized in Ilkorin to *ledin, compare lad ’plain, valley’ in Dagorlad, Himlad; imlad a narrow valley with steep sides, in Imladris (Silm.index). Noldorin sometimes also shows pl. -in, as nauglin ’dwarves’ (NAUK-) for example, so we would deal with lenited *lhad > pl. *lhedin here.
Compare also Calledin below (3.32).