Suggestions for sunglasses (6)
I believe the answer is:
shades
This could be a double definition.
'suggestions' is the first definition.
The answer and definition can be both related to thinking as well as being plural nouns.
Maybe you can see a link between them that I can't see?
'sunglasses' is the second definition.
(synonyms)
'for' acts as a link.
Can you help me to learn more?
(Other definitions for shades that I've seen before include "'Tints, tones (6)'" , "blinds?" , "Old ghosts or modern sunglasses" , "Sunglasses, colloquially" , "Cool sunglasses or archaic ghosts" .)