ᴹ√TUN root. “*tall; mound”
An unglossed root in The Etymologies of the mid-1930s with derivatives like ᴹQ. tunda/N. tonn “tall” and ᴹQ. tundo/N. tunn “hill, mound”; its most notable use was as the basis for the name ᴹQ. Túna (Ety/TUN), which continued to appear in later writings as the name of a hill (S/59). The word ᴹQ. lopotundo “rabbithole” from the Declension of Nouns of the early 1930s indicates the root may have had a difference sense (“hole”?) in earlier writings (PE21/10, 31).
References ✧ Ety/MINI, TUN