Drop out of a can? (3)
I believe the answer is:
oil
'drop out' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'of a can?' is the wordplay.
'of' becomes 'o''.
'a can?' becomes 'il' (I can't justify this - if you can you should give a lot more credence to this answer).
'o'+'il'='OIL'
Can you help me to learn more?
(Other definitions for oil that I've seen before include "painting" , "What can be extracted" , "Slippery liquid" , "Viscous substance as lubricant" , "Crude" .)