An earlier name for Amon Hen appearing in Lord of the Rings drafts from the 1940s (TI/364), apparently a combination of some form of the root ᴹ√TIR having to do with watching and mindon “tower”, as suggested by Roman Rausch (EE/2.61).
place name. Tirmindon
- Tirmindon → Amon Hen ✧ TI/364
Word Gloss TIR “watch, guard” mindon “(isolated) tower”