A noun in the Gnomish Lexicon of the 1910s glossed “a dale” (GL/72), probably a derivative of the early root ᴱ√TUM(B)U as suggested by Christopher Tolkien (LT1A/Tombo; QL/95).
Gnomish
nand
noun. field acre
nann
noun. field acre
redhos
noun. land
clochiol
adjective. stone
gond
noun. stone
tumli
noun. dale
tûm
noun. valley
An adjective for “stone” in the Gnomish Lexicon of the 1910s appearing as an element in G. gôf·clochiol “stone-fruit” (GL/40), derived from G. cloch “a stone” (GL/26).