Many a summer TV airing

RERUN

Think of what you might watch when a show returns to the schedule after its original run.

The clue "Many a summer TV airing" hints at shows that play repeatedly when new episodes aren’t on. "Rerun" fits because networks often air past episodes during summer breaks, and the word itself combines "re-" (again) with "run" (to broadcast). It’s a straightforward definition with no hidden wordplay—just a common term for recycled TV content.