Crossword Genius

Foreign expat nobly yielding section of field (7,3)

Ross

I believe the answer is:

penalty box

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

'section of field' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'foreign expat nobly' is the wordplay.
'foreign' is an anagram indicator (foreign order of the letters).
'expat'+'nobly'='expatnobly'
'expatnobly' is an anagram of 'PENALTY BOX'.

'yielding' acts as a link.

Can you help me to learn more?

(Other definitions for penalty box that I've seen before include "Spot container" , "area spotted?" .)

I've seen this clue in The Independent.
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