Crossword Genius

Black suspension in stirred cauldron, eye reportedly dropped in? (4,5)

Ross

I believe the answer is:

rain cloud

I'm a little stuck... Click here to teach me more about this clue!

'black suspension' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'stirred cauldron eye reportedly dropped in?' is the wordplay.
'stirred' indicates an anagram.
'eye' indicates the central letters (eye can mean the centre of something).
'reportedly' becomes 'inc' (I am not sure about this - if you are sure you should believe this answer much more).
'dropped in?' means one lot of letters goes inside another.
The central letters of 'cauldron' are 'auldro'.
'auldro' is an anagram of 'raloud'.
'raloud' enclosing 'inc' is 'RAIN-CLOUD'.

'in' is the link.

Can you help me to learn more?

(Other definitions for rain cloud that I've seen before include "Uncordial (anag.)" , "Nimbus" .)

I've seen this clue in The Guardian.
Want a hint initially instead of a full solution? Install my app