A noun in The Etymologies of the 1930s glossed “sky” derived from the root ᴹ√ƷEL of the same meaning (Ety/ƷEL).
Qenya
tea
noun. straight line, road
-nta
suffix. *their
-ssa
suffix. *their
helle
noun. sky
tie
noun. path, course, line, direction, way
té
noun. path
A word in The Etymologies of the 1930s glossed “straight line, road” under the root ᴹ√TEÑ “line, direction” (Ety/TEÑ).
Neo-Quenya: For purpose of Neo-Quenya I assume its primary meaning is a simple straight line, and it is used for “road” only metaphorically, further implying that the road is straight.