Related Clues:

• Optical organ
• Attentive watch
• $1 bill illustration
• Important organ
• Flower center
• "Try it, you'll like it!"
• Organ on the Great Seal of the United States
• A patch may cover one
• "Here, try some!"
• Peacock-tail illusion
• See 1
• See 14
• ... with smattering of savour
• Look both ways
• Discrimination shown - but not a lot