A noun appearing as N. lhoch “ringlet” in The Etymologies of the 1930s under the root ᴹ√LOKH (Ety/LOKH).
Neo-Sindarin: Since the unvoicing of initial liquids did not occur in Sindarin, many people adapt this word as ᴺS. loch “ringlet” for purposes of Neo-Sindarin, as suggested in HSD (HSD).
A noun appearing as N. lhaws “ringlet” in The Etymologies of the 1930s under the root ᴹ√LOKH, cognate to ᴹQ. lokse “hair” (Ety/LOKH). In this word, the spirantal *χ* vocalized to *u* after *o* as usual in Noldorin and then *ou* became *au* (aw).
Neo-Sindarin: Some people adapt this word as ᴺS. laus for Neo-Sindarin, replacing the unvoiced lh with voiced l. However, this is not the only relevant phonetic difference between Noldorin and Sindarin: *χ* generally vocalized to *i* in Sindarin and in any case seems not to have vocalized at all before *s*. It’s probably better to avoid such issues and just use ᴺS. loch for “ringlet”, adapted from N. lhoch.