### Clue: Cook departs, out! Good line and curve (9)
### Answer: LONGITUDE 
 ### Explanation: Definition: curve 
 **Anagram of**(Cook) [ D(abbrev. for "departs", as in a rail timetable, say) + OUT + G(abbrev. for "good") + LINE ].
Defn: One of the imaginary curved lines from pole to pole on the earth.