Ritual dancing about after piercing tongues (4-6)
I believe the answer is:
ural-altaic
'ritual dancing about after piercing tongues' is the definition.
Although both the answer and 'tongues' are nouns, they are not in the same form of the noun.
'ritual dancing about after piercing tongues' is the wordplay.
'dancing' is an anagram indicator.
'about' is an insertion indicator.
'after' becomes 'a la' ('a la' - 'in the style of ' or 'after' in French).
'piercing tongues' becomes 'c' (I can't justify this - if you can you should give a lot more credence to this answer).
'ritual' with letters rearranged gives 'urltai'.
'urltai' going around 'ala' is 'uralaltai'.
'uralaltai'+'c'='URAL-ALTAIC'
Can you help me to learn more?
(Another definition for ural-altaic that I've seen is " Family of languages that includes Manchu and Mongolian".)