Possible Clues:

• Frozen pendent
• Medici cleverly collaring winter eavesdropper
• Hanging frozen water
• DNA removed from Icelandic, spiky type one associates with 23 down
• Standoffish sort
• Christmas ornament shape
• Winter hanger-on
• It can drip or drop
• This eavesdropper will run away, if the situation heats up
• Spot hook picked up for one to hang outside?