### Clue: A tailor at times rues working in topless coat (8)
### Answer: MEASURER 
 ### Explanation: Definition: A tailor at times
 **Anagram of**(… working) RUES **contained in**(in) "smear"(a coat of substance spread over a surface, eg. glazing on pottery) **minus its 1st letter**(topless …, in a down clue).
Defn: … has to do as this.