In Pakistan, the meaning of a song (6)
I believe the answer is:
anthem
'a song' is the definition.
(anthem is a kind of song)
'in pakistan the meaning' is the wordplay.
'in' indicates a hidden word.
'ANTHEM' is hidden in the letters of 'pakistan the meaning'.
'of' acts as a link.
(Other definitions for anthem that I've seen before include "Religious chant" , "Choral work" , "National or church song" , "National hymn" , "Song in praise of a nation" .)