Nplaim (gender unknown)
Each of the Free reeds (NB: plural forms don’t occur in Hmong language); For extra volume, the lowest pipe (i.e. the thickest and shortest one) often contains 2 or even 3 reeds).
Details?
Catlin, Amy: Hmong musical instruments. In: The Garland encyclopedia of world music (4): Southeast Asia (ed. 2013).
ws (linguistics [➺ Dictionaries, &c.])