What does the cryptic crossword clue "Stop plugging uncouth war tunes (6)" mean?

The definition is "Stop". The wordplay uses a hidden word. THWART ( hidden word in [plugging] uncou TH WAR T unes The answer is THWART.

Stop plugging uncouth war tunes (6)

Independent Cryptic #11988 | 25 Across | 2025-03-12 flower