a cupboard built into a kitchen or a chest of drawers for kitchen use, as for dishes and silverware.
a group of unofficial advisers on whom a head of government appears to rely heavily.
Origin of kitchen cabinet
An Americanism dating back to 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for kitchen cabinet
a group of unofficial advisers to a political leader, esp when considered to be more influential than the official cabinet
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