tyellë

noun. grade, order, step (in a stairway or ladder), grade, step (in a stairway or ladder), order

A word appearing in its plural form tyeller “grades” in The Lord of the Rings Appendix E as applied to the rows of the tengwar chart (LotR/1118). In notes on Words, Phrases and Passages from the Lord of the Rings (WPP) from the late 1950s or early 1960s Tolkien said its proper meaning was “grade, order” (PE17/122), but in notes from the late 1960s Tolkien said it meant “grade, also a step in a stairway, ladder”, and was derived from the root √KJEL “go down slowly, especially go down by degrees” (PE17/157).

tyellë

grade

tyellë noun "grade" (pl. tyeller is attested) (Appendix E), "grade, order; a step in a stairway, [or in a] ladder" (PE17:122, 157)