Very little mother? The smallest possible (7)
I believe the answer is:
minimum
'smallest possible' is the definition.
(I've seen this before)
'very little mother?' is the wordplay.
'very little' becomes 'mini' (I am not sure about the 'very' bit.).
'mother?' becomes 'mum' (informal term for mother).
'mini'+'mum'='MINIMUM'
'the' acts as a link.
Can you help me to learn more?
(Other definitions for minimum that I've seen before include "Bottom" , "Least recorded value" , "Smallest possible quantity" , "Lowest point" , "Least possible quantity" .)