An Adûnaic noun for “the heaven” or “sky”, cognate of Q. menel but not a direct loan word from Quenya (SD/241). It was borrowed from Primitive Elvish, probably from an Avari dialect, and therefore underwent different phonetic development (SD/414). In one place Tolkien changed it minil (SD/414), but the form minal appears in various compounds and is probably to be preferred.
Adûnaic
minul-târik
place name. Pillar of Heaven
minal
noun. the heavens, sky
The Adûnaic name of the Pillar of Heaven (Q. Meneltarma), the great and holy mountain at the center of Númenor (SD/249). The first element is the objective form of minal “the heavens”. The second element târik “pillar” is normally a noun, but in this case it behaves verbally with the sense “that which supports”, since the objective case requires a second verbal element (SD/429). Therefore, the literal translation of the name is “That Which Supports the Heavens”. Conceptual Development: The first Adûnaic name for this mountain was Menel-tūbil or Menel-Tûbal (SD/305, SD/363).