C cedilla? (6)

[pquinlan]

Final clue I have is C with a cedilla underneath, followed by a question mark. C _ N _ O _. Grateful for assistance.

[Dinkypuzzled]

condom (c on DOM - Document Object Model) ?)

[pquinlan]

Thanks for your suggestion, Dinky. Knowing this particular crossword I doubt the Document Object Model reference, although it could be condom alright.