What does the cryptic crossword clue "Punches possessed energy? This could cover a shiner (9)" mean?

The wordplay uses a charade (building blocks). LAMPS (synonym="punches") + HAD (synonym="HAD") + E (synonym="E") = LAMPSHADE The answer is LAMPSHADE.

Punches possessed energy? This could cover a shiner (9)

Guardian Cryptic #29605 | 12 Across | 2025-01-30 flower