[ᴹ]*√(S)RŌ root. “east”
|RŌ/ORO||“up(wards); rise (up), go high, mount”||s-fortification|
ᴹ√SRŌ root. “east”
A root appearing in a rejected page of roots from the Quenya Verbal System of the 1940s (PE22/127), possibly as a variant of √RŌ/ORO that Tolkien introduced to explain S. rhûn “east” after he decided initial r- did not become rh- in Noldorin/Sindarin; see the entry on S. rhûn for discussion.
Reference ✧ PE22/127