### Clue: Love 100 lines that's part of Gettysburg address? (3,4)
### Answer: ZIP CODE 
 ### Explanation: Definition: part of Gettysburg address
 ZIP(zero;love in tennis scores) + C(Roman numeral for 100) + ODE(poetic lines).
Defn: Part of the full postal address for one in the USA, in Gettysburg, for example.