warning sign

In short, the pot belly isn't just a punchline - it's a warning sign.

The warning sign flashing here is not the value of your pension pot - it is what is going to happen to the economies in which we all live and work.

So the real warning sign here is not about the value of your pension but about the health of the economy in which we live and work.

Hill said he does not yet know if Super Bowl weekend represented a blip or a warning sign.

But, as the thousands of India fans celebrated in this city built in the desert, the tame inevitability of this tournament should act as a warning sign to those running the world game.