ᴺS. [N.] ^celu n. “spring, source” (Category: Spring, Well)
N. celw n. “spring, source” (Category: Spring, Well)
A noun in The Etymologies of the 1930s given as N. celw “spring, source” derived from the root ᴹ√KEL “go, run (especially of water), flow away downhill” (Ety/KEL). A similar form G. celu appeared in Gnomish Lexicon of the 1910s beside variant celwin, but there it had the gloss “rill, stream, runlet” (GL/25).
Neo-Sindarin: If adapted to Neo-Sindarin, this word would be ᴺS. celu as suggested in Hiswelókë’s Sindarin Dictionary (HSD).
Reference ✧ Ety/KEL ✧ “spring, source”
|ᴹ√KEL > celw||[kelwe] > [kelw] > [kelu]||✧ Ety/KEL|