Crossword Genius

TV alien you wouldn't want to drop? (7)

Ross

I believe the answer is:

clanger

Here is my best explanation:

This clue is a double definition.

'tv alien' is the first definition.
(reference to children's TV show The Clangers)

'you wouldn't want to drop?' is the second definition.
(to drop a clanger is to make a blunder)

This clue was last seen in The Times