Having old pot daughter makes spread (6)
I believe the answer is:
expand
'spread' is the definition.
(I've seen this before)
'having old pot daughter' is the wordplay.
I cannot quite understand how this works, but
'old' could be 'ex' (prefix meaning former or onetime) and 'ex' is found in the answer.
'pot' could be 'pan' (I've seen this in other clues) and 'pan' is found within the answer.
'daughter' could be 'd' (genealogical abbreviation) and 'd' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'makes' is the link.
Can you help me to learn more?
(Other definitions for expand that I've seen before include "inflation" , "produce growth" , "Increase in bulk or importance" , "Extend in one or more directions" , "Fill out" .)