Possible Clues:

• Cross looking back, as this needs to be closed to keep the heat in
• 40 square rods
• Original cross word?
• Chancel entrance display, perhaps
• A crucifix
• Rustic cross
• Old land measure and large cross in a church
• "Odor" anagram that will make you cross?
• Cross as marsupial died
• Quarter of an acre — crucifix