Staff study family's kitchen implement (9)
I believe the answer is:
mandoline
'kitchen implement' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'staff study family's' is the wordplay.
'staff' becomes 'man' (as in staffing or manning a particular place).
'study' becomes 'do' (to 'do' a subject at university is to study it).
'family' becomes 'line' (one's lineage).
'man'+'do'+'line'='MANDOLINE'
Can you help me to learn more?
(Other definitions for mandoline that I've seen before include "dicing with this?" , "Slicing tool" .)