### Clue: Slip quantity into vegetable and herb with duck (10)
### Answer: PECCADILLO 
 ### Explanation: Definition: Slip
 CC(abbrev. for "cubic centimetre", a unit of volume/quantity measurement) **contained in**(into) PEA(a green seed vegetable) **plus**(and) DILL(an aromatic herb, of the parsley family) **plus**(with) O(letter representing 0, specifically a batsman's score of 0 runs/a duck in cricket).
Defn: …/a relatively minor fault.