hnyuv(“intestine”) + a second element of unknown interpretation ntxwm.
This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Ratliff considers this a native Hmongic term, but doesn't give a reconstruction for ntxwm.[1] Perhaps it's a nativized borrowing from Chinese子 (zǐ, “nominalizer suffix”)? In that case, partial calque from Chinese腸子/肠子 (chángzi, “(dialectal) sausage”)?”