### Clue: It follows it might have to be taken out (8)
### Answer: APPENDIX 
 ### Explanation: Definition: It follows it might have to be taken out 
 Double defn: 1st: A section of subsidiary text at the end of a book or document; and 2nd: A sac attached to the large intestine in humans and other mammals, which in humans might have to be surgically removed/taken out if one has appendicitis.