The phrase "weaker euro" refers to when the value of the euro currency decreases compared to other currencies. This means that it takes more euros to buy goods or services from other countries. Full definition
Some investors fear other weak euro countries could eventually take the same path. (sandiegouniontribune.com)
But the losses were contained and there was no sign of serious contagion to other weaker euro zone sovereigns. (uk.reuters.com)
Eventually, the gap between strong EURO countries and weak EURO counties could become so large that the strong counties would become incapable or unwilling to continue to fund the weak countries. (3dpolicy.ca)