Related Clues:

• Important organ
• Flower center
• Not quite make the putt, with 'out'
• Organ on the Great Seal of the United States
• Wheel's edge
• A patch may cover one
• Volcanic edge
• Peacock-tail illusion
• See 1
• See 14
• Look both ways
• One sees part of rare object in haystack
• The Observer, entered as Paper of the Year
• Edge - lip
• Watch - middle of cyclone