A word glossed “tree-stem” from the Declension of Nouns (DN) of the early 1930s (PE21/35). In biology, the “stem” of a tree is the system that moves water from the roots to the leaves of trees. This word might be a variation on earlier and later “root” roots: ᴱ√TṚKṚ and ᴹ√SULUK.