A word for “sand” from Early Qenya Word-lists of the 1920s (PE16/139). Its etymology is unclear, and none of the words from this period with similar forms seem to be related.
Early Quenya
tyus
noun. cud
tyustyukta-
verb. to chew the cud; to reflect, reminisce
tyusse
noun. sand
tyúka
noun. cud
A noun appearing as ᴱQ. tyus (tyuks-) “cud” in the Qenya Lexicon of the 1910s derived from the early root ᴱ√TYUKU “chew” (QL/50). It became ᴱQ. tyúka “cud” in Early Noldorin Word-lists of the 1920s as a cognate of ᴱN. cig from primitive ᴱ✶kiwka (PE13/140).
Neo-Quenya: The form tyúka veers too close to later ᴹQ. tiuko “thigh” (Ety/TIW), so I’d instead restore the 1910s form as ᴺQ. tyuxë [tyukse] “cud” derived from the Neo-Root ᴺ√TYUK.
marma
noun. sand
tyúte
noun. thumb
A verb appearing as ᴱQ. tyustyukta- “chew the cud, reflect, reminisce” in the Qenya Lexicon of the 1910s as combination of ᴱQ. tyus “cud” and ᴱQ. tyukta- “chew” (QL/50).
Neo-Quenya: I’d retain this verb as ᴺQ. tyustyuhta- for purposes of Neo-Quenya since I retain both its elements as ᴺQ. tyuxë “cud” and tyuc- “chew”.