Meaning of chair warmer

chair' warm"er

Pronunciation: [key]
— Informal. Informal.
  1. an officeholder, employee, or the like, who accomplishes little, esp. a person who holds an interim position.
  2. a person who lounges for long periods sitting in a chair, as in a hotel lobby or clubroom.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.