What is the name of this part of a bathroom sink?

It’s right under the handle. It is part number 10 in this picture:

http://www.eclectic-ware.com/Eclectic-ware/Turned_In_Stone/TIS-bathroomfaucets/TIS-faucets-specsheet.JPG

This entry was posted on Friday, July 8th, 2011 at 6:16 pm and is filed under Bathroom Sink. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.