Verify value in drop down list through regular expression

To find element drop down is easy but to find a drop down having some specific value in their list is difficult.
Go to www.ebay.in you will see there is drop down along with search text box.
How to verify a specific value "Collectibles" is in drop down list. Doing testing in Selenium, It will come as :  

How to select the value in drop down using regular expression.

There are situation when we need to select the drop down value with some partial text .
With the help of regular expression we can select the drop down value.