### Clue: A pair of Tibetan cattle eating English Tewkesbury peeled rhubarb (6-3)
### Answer: YAKETY-YAK 
 ### Explanation: Definition: rhubarb

**YAK** + **YAK** ("a pair of Tibetan cattle") *eating* **E** + **T**(ewkesbur)**Y** [*peeled*]