(bird) heledir (i cheledir, o cheledir), no distinct pl. form, not even with article (i cheledir). Since the final element is derived from primitve -tirno, it may be that the otherwise lost final n would be preserved in the coll. pl. ?heledirnath. The literal meaning of the word is ”fish-watcher”.
Quenya
halatir
kingsfisher
halatir (halatirn-, as in dat.sg. halatirnen), also halatirno, noun "kingsfisher", etymologically "fish-watcher" (TIR, SKAL2, KHAL1)