A verb in The Etymologies of the 1930s glossed “draw water, scoop out, bale out” derived from the root ᴹ√KALPA “water-vessel” (Ety/KALPA).
Conceptual Development: The Qenya Lexicon of the 1910s instead had ᴱQ. kelta- “draw water” under the early root ᴱ√KELE “flow, run; ooze, trickle” (QL/46).
A noun in The Etymologies of the late 1930s glossed “water-vessel” under the root ᴹ√KALPA of the same meaning (Ety/KALPA). The word ᴱQ. kalpa “bucket, vessel” also appeared in the Qenya Lexicon of the 1910s under the early root ᴱ√KḶPḶ “hold, contains (esp. of liquids)” where Tolkien also considered and rejected another form kalpe (QL/47). The word appeared again in the Declension of Nouns of the early 1930s with the gloss “bucket” (PE21/8).