Definify.com

Webster 1913 Edition

Noun.

One who pours.

Noun.

One that pours.

pourer ‎(plural pourers)

One who, or that which, pours.
- 2010, Cheryl Charming, Just Shots: A Little Book of Liquid Fun (page 1)
  Simply **** off a bottle lid and then push the pourer into the bottle. If your bottle has a wide mouth, then you'll have to buy a wide pourer.
- 2013, Claudio Delang, Living at the Edge of Thai Society (page 104)
  The visitor then passes the cup to others who are present. Each person takes a sip, handing the cup back to the pourer.