- lîn (pool), no distinct pl. form, but coll. pl. #liniath (isolated from Hithliniath, WJ:194). 2) ael (aelin-, pl. aelin) (pool, mere). In ”Noldorin” oel, pl. oelin. 3) nên (water, pool, stream, waterland), construct nen, pl. nîn**. **
Sindarin
lîn
noun. pool, mere
lîn
noun. pool
lîn
lake
lîn
pool
lîn (lake), no distinct pl. form, but coll. pl. #**liniath (isolated from Hithliniath**, WJ:194). 3)
lîn
lake
(pool), no distinct pl. form, but coll. pl. #*liniath*** (isolated from Hithliniath**, WJ:194).
lîn
pool
(lake), no distinct pl. form, but coll. pl. #*liniath*** (isolated from Hithliniath**, WJ:194). 3)
A word for “pool” or “lake”, appearing as an element in the name Linaewen “Lake of Birds” (S/119; UT/401). As an independent word it is probably ✱lîn, and it is probably a derivative of the root √LIN of similar meaning (PE17/145, 160).
Conceptual Development: The earliest obvious precursor to this word is ᴱN. lhuin “pool” in Early Noldorin Word-lists of the 1920s (PE13/149). In The Etymologies of the 1930s it appeared as N. lhîn “pool”, a derivative of the root ᴹ√LIN “pool” and cognate to ᴹQ. linya (Ety/LIN¹). Remnants of the ancient y can be seen in its (lenited) class plural liniath in the name N. Hithliniath “Pools of Mist” (Ety/KHIS; LR/262). It cannot be a direct cognate of its Quenya form, however, at it has no signs of a-affection. Christopher Tolkien mentioned the name element lin “pool, mere” in The Silmarillion appendix (SA/lin), though whether it was intended to be a primitive form or a Sindarin word isn’t clear.
Neo-Sindarin: I think it is best to simply adapt the Noldorin form into (Neo) Sindarin as lîn, perhaps derived from primitive ✱linyē and hence with class plural liniath.