*ᴱ√TIÐI root. “‽stick up”
A root given as ᴱ√TIŘI [TIÐI] “stick up” in the Qenya Lexicon of the 1910s (though Tolkien marked the gloss with “?”), with derivatives like ᴱQ. tinda “spike”, ᴱQ. tirin “tower”, and ᴱQ. tirion “a mighty tower, a city on a hill” (QL/93). In later writings, the city name Q. Tirion “Great Watch Tower” (RGEO/65) or “Watchful City” (MR/176) was almost certainly derived from the root √TIR “watch”.
References ✧ LT1A/Kortirion; QL/93