Lunchbox cover located by staff (7)
I believe the answer is:
manhood
'lunchbox' is the definition.
I can't judge whether this defines the answer.
'cover located by staff' is the wordplay.
'cover' becomes 'hood' (hooding is a kind of covering).
'located by' says to put letters next to each other.
'staff' becomes 'man' (as in staffing or manning a particular place).
'hood' put after 'man' is 'MANHOOD'.
Can you help me to learn more?
(Other definitions for manhood that I've seen before include "What a boy reaches after puberty" , "21 [PETER]" , "State of adult male" , "Virility" , "Adult condition" .)