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float bowl

noun
  1. Automotive. the bowl-shaped section of a carburetor in which a reserve of fuel is maintained, the fuel level being regulated by a float.
Also called float chamber.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for float chamber

float chamber

noun
  1. a chamber in a carburettor in which a floating valve controls the entry and level of petrol
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012