starter
noun
[ ˈstɑːtə ]
• a person or thing that starts in a specified way.
• "I'm just a slow starter"
• an automatic device for starting a machine, especially the engine of a vehicle.
• "the starter motor"
• the first course of a meal.
• a plan or idea that has a chance of succeeding and is therefore worthy of consideration.
• "she began to think that she must move away, yet she knew that it was not even a starter"
• a bacterial culture used to initiate souring in making yogurt, cheese, or butter.