glynmoir

Why the 2♣ bid? Why not 2 NT (Jordan, showing a limit raise with 4 spades, standard in all American systems)? We should know what general system you're playing, as Jordan (also called Truscott) may not be available. If you are playing Jordan, this problem doesn't exist, as partner would have already placed the contract. (You can't have the "or better than limit raise hand, as you passed in first seat). For this reason, in American systems, Drury is not played over a double.

Used to be that a double of 4 ♠ was for penalties. Not so clear any more. If partner has a max (10 points, prime cards) repeated spade leads could set this contract a lot. But, you're not on lead, partner doesn't have to have anything useful, and strength sits behind you. Pass unless you really need a swing.

Perhaps the answer to the defensive question is that NT is the wrong bid (or less accurate). 2 ♠ or 4 ♠ should get the void message across.