Powders in jars (6)
I believe the answer is:
grates
This clue could be a double definition.
'powders' is the first definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Perhaps there's a link between them I don't understand?
'jars' is the second definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps you can see a link between them that I can't see?
'in' is the link.
Can you help me to learn more?
(Other definitions for grates that I've seen before include "Makes rasping sound, hard on ear" , "Rubs harshly against, perhaps on nerves" , "Makes harsh noise by rubbing - on nerves?" , "Rasps against, food or nerves" , "Makes harsh sound by rubbing" .)