Crossword Genius

Unidentified object sat with rubbish (7)

Ross

I believe the answer is:

whatsit

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'unidentified object' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'sat with rubbish' is the wordplay.
'rubbish' indicates anagramming the letters (a poor quality or rubbish spelling of the letters).
'sat'+'with'='satwith'
'satwith' is an anagram of 'WHATSIT'.

Can you help me to learn more?

(Other definitions for whatsit that I've seen before include "Thingummy" , "Something one can't recall" , "person not to be named" , "something indefinable" , "Thingumajig" .)

I've seen this clue in The Times.
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