noun, slang ·Uncommon ·College level

Definitions

Noun

1. 1
   An obsessive railfan US, derogatory, slang, sometimes
2. 2
   A device that foams or froths liquid.
3. 3
   A device that foams or froths liquid.; A screw-top culinary device that comprises a pressure vessel used to hold a liquid and is charged with a compressed gas, to force the contents out of the nozzle, to create a foam.

Etymology

From foam + -er.