*nedhu (pillow), analogical pl. nedhy. Cited in archaic form nedhw (LR:378, s.v. NID), so the coll. pl. is likely nedhwath.
Noldorin
nedhw
noun. bolster, cushion
nedhw
noun. bolster, cushion
nef
noun. bolster, cushion
Sindarin
nedhu
noun. bolster, cushion
nedhu
bolster
nedhu
bolster
(pillow), analogical pl. nedhy. Cited in archaic form nedhw (LR:378, s.v. NID), so the coll. pl. is likely nedhwath.
nedhu
noun. bolster, cushion
Quenya
nirwa
bolster, cushion
nirwa (1) noun "bolster, cushion" (NID)
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Middle Primitive Elvish
nidwō
noun. bolster, cushion
Old Noldorin
nidwa
noun. bolster, cushion
Qenya
nirwa
noun. bolster, cushion
A noun in The Etymologies of the 1930s derived from ᴹ✶nidwō “bolster, cushion” under the root ᴹ√NID “lean against” (Ety/NID). The ancient stressed wō became wa (ON. nidwa), which resulted in a-affection changing i to e to produce nedhw.
Neo-Sindarin: Many Neo-Sindarin writers adapt this word as ᴺS. nedhu “bolster, cushion” to better reflect the actual pronunciation, as suggested in HSD (HSD). Compare S. madu < madw̯ (PE17/148).