P’ao (-)
original: 匏
Spelling [i.e. Wade-Giles transcription; ws] in Moule of Páo; According to Moule, the "P’ao, the round gourd, was used to make a Shêng [sic], [whereas a] Hu, 壺 [traditional; simplified: 壶 (hú [kettle/pot]); ws], the bottle gourd, was used to put wine or medicine in".
Moule, Arthur C.: A list of the musical and other sound-producing instruments of the Chinese [Shanghai, 1908, Jl. of the north China branch of the Royal Asiatic Society, 39]. Preface by Harrison Ryker. Buren, 1989 [facsimile], p.89, 93.
ws (Hànzì characters and Pīnyīn transcription)简明汉英词典 (Jiǎnmíng Hàn Yīng cídiǎn) / A concise Chinese-English dictionary. Běijīng, 1982, p.236.