Accessory for the Penguin (7)
I believe the answer is:
monocle
'accessory for the penguin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for monocle that I've seen before include "One-lens seeing apparatus" , "Single eyeglass" , "optical device" , "Reading glass for one eye only" , "lens" .)