starter

Short definition from Wiktionary

Noun

1. 1
   Someone who starts, or who starts something.
2. 2
   Someone who starts, or who starts something: The person who starts a race by firing a gun or waving a flag.
3. 3
   Someone who starts, or who starts something: A starting pitcher.
4. 4
   Someone who starts, or who starts something: A person employed to take new players to the first tee at suitable intervals, and to provide them with caddies and equipment.
5. 5
   Something that starts something: An electric motor that starts an internal combustion engine.
6. 6
   Something that starts something: A device that initiates the flow of high voltage electricity in a fluorescent lamp.
7. 7
   Something that starts something: A yeast culture, or a medium containing one, used to start a fermentation process.
8. 8
   Something with which to begin; a first property, etc.
9. 9
   The first course of a meal, consisting of a small, usually savoury, dish.
10. 10
    A player in the lineup of players that a team fields at the beginning of a game.
11. 11
    A dog that rouses game.
12. 12
    A short length of rope formerly used for casual chastisement in the Navy.
13. 13
    A railway signal controlling the starting of trains from a station or some other location, more fully called a starter signal or starting signal.