Money, and where to keep it? (3)
I believe the answer is:
tin
'money' is the definition.
(old-fashioned slang term for money)
'and where to keep it?' is the wordplay.
I cannot really see how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
'it?' could be 't' (abbreviation. e.g. in 'tis) and 't' is found in the answer.
A single letter 'i' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for tin that I've seen before include "roofing material" , "Silvery metallic element" , "Cornish metal?" , "Silvery-white metallic element" , "With copper, makes bronze" .)