@@@ from pilind-
Quenya
pilin
arrow
Sindarin
pilin(d)
noun. arrow, [G.] dart
plinn
noun. arrow
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
pilin
root. *arrow
An unglossed root in The Etymologies of the 1930s with the derivatives ᴹQ. pilin “arrow”; in The Etymologies as recorded by Christopher Tolkien the root was given as ᴹ√PÍLIM (Ety/PÍLIM), but according to Carl Hostetter and Patrick Wynne the root might also be read as ᴹ√PÍLIN (EtyAC/PÍLIM). This root is probably a later iteration of the early root ᴱ√PILI from the Qenya Lexicon of the 1910s, unglossed and with derivatives like ᴱQ. pilin “feather” and ᴱQ. pilna “arrow” (QL/74); it also had derivatives like G. pilon “arrow, dart” from the contemporaneous Gnomish Lexicon (GL/64). Later “feather” words were based on the root ᴹ√KWES (Ety/KWES; LotR/1122), but ᴹQ. pilin remains the best known Elvish word for “arrow”.
Early Quenya
pilin
noun. feather; arrow
pilna
noun. arrow
Qenya
pilin
noun. arrow, arrow; [ᴱQ.] feather
Solosimpi
plinde
noun. arrow
Early Noldorin
lhinn
noun. arrow
lhind
noun. arrow
pilin (pilind-, as in pl. pilindi) noun "arrow" (PÍLIM)