NPR host Glass (3)
I believe the answer is:
ira
'npr host glass' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ira that I've seen before include "George 13 down's brother" , "Songwriter George's elder brother" , "nationalists" , "George Gershwin's older brother, the lyricist" , "terrorists" .)