pupso

noun. large fly, large fly, [ᴹQ.] blow fly

A word appearing in both the Outline of Phonetic Development (OP1) of the 1930s and the Outline of Phonology (OP2) of the 1950s as a derivative of ✶buzbō “large fly”, where the ancient pair zb was unvoiced to sp and then underwent metathesis to ps, and the initial p was the result of “assimilative unvoicing of the initial b” (PE19/48, 101). In the 1950s the Quenya form was unglossed and so presumably had a meaning similar to its ancient gloss “large fly”, but in the 1930s the Quenya form was glossed “blow-fly”.