Cookie means woman of the soldier / / also concubine
Lunfardo is difficulty, situation very hard and difficult to cope with, blow and setback. It comes from "sea biscuit", a cake that was carried on the long voyages by sea and was very hard to break teeth (like a hit). See hang biscuit.
In Colombia can mean two opposite things: that it is very easy to do something, or on the other hand it is very difficult. Kind of bread usually sweet, round and slim, like an arepa.
A cookie is a roll of round or square shape, made from a dough of flour, butter, eggs and other ingredients, baking in the oven until ready to be consumed.