Boring outfit (3,3)
I believe the answer is:
oil rig
'boring outfit' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'boring outfit' is the wordplay.
'boring' becomes 'oil' (I can't justify this - if you can you should give a lot more credence to this answer).
'outfit' becomes 'rig' (synonyms).
'oil'+'rig'='OIL-RIG'
Can you help me to learn more?
(Other definitions for oil rig that I've seen before include "It's used for drilling, at sea perhaps" , "What may be boring" , "used by a bore" , "I would do well" , "source of offshore wealth" .)