1. (figurative) something regarded as sacred or inviolable
   "every politician fears to touch that holy of holies, the Social Security System" 
2. (Judaism) sanctuary comprised of the innermost chamber of the Tabernacle in the temple of Solomon where the Ark of the Covenant was kept
   - sanctum sanctorum

Type of: sacredness, sanctuary

Part of: Tabernacle

Encyclopedia: Holy of holies

• reading program
• reading room
• reading teacher
• readjust
• readjustment
• readmission
• readmit
• readopt
• readout
• ready
• ready and waiting
• ready cash
• ready money
• ready reckoner
• ready to hand
• ready-cooked
• ready-made
• ready-mix
• ready-to-eat
• ready-to-wear
• readying
• reaffiliation
• reaffirm
• reaffirmation
• Reagan