Miscellany found in a widow's place, second from the right (7)
I believe the answer is:
omniana
'miscellany found' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'a widow's place second from the right' is the wordplay.
'widow's place' becomes 'nain' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'second' becomes 'mo' (both are short periods of time).
'from the right' is a reversal indicator.
'a'+'nain'+'mo'='anainmo'
'anainmo' written backwards gives 'OMNIANA'.
'in' is the link.
Can you help me to learn more?
(Another definition for omniana that I've seen is " Sundry varied stuff".)