A word meaning “tine, spike, point” (PE17/36) or “spike, sharp horn” (RC/775) as an element in names like S. Celebdil “Silvertine”. In a discussion of the word niphredil, Tolkien said til or -il meant “point, ending” (PE17/55).
Conceptual Development: The Etymologies of the 1930s had N. till “horn” as the cognate of ᴹQ. tilde “point, horn” under the root ᴹ√TIL “point, horn” (Ety/TIL).
Sindarin name of a peak in the Misty Mountains translated “Silvertine”, itself a translation of Kh. Zirakzigil of the same meaning (LotR/283). This name is a combination of celeb “silver” and the lenited form of till “point, spike”.
Conceptual Development: In Lord of the Rings drafts from the 1940s, Tolkien first wrote this name as N. Celebras “Silverhorn” before settling on N. Celebdil (TI/174, 306).