1start·er 
/ˈstɑɚtɚ/ noun
plural start·ers /ˈstɑɚtɚ/ noun [count] 1 : a player, horse, etc., that is in a game or race at its beginning
▪ The team is playing only five regular starters. 2 : someone who gives the signal for a race to start 3 : a device that is used for starting an engine
▪ The car's starter needs to be replaced. 4 : someone or something that starts an activity, process, etc.
▪ He was a late starter in school. [=he started school later than most children] ▪ The question was a good conversation starter. ▪ He bought a starter kit for building a model airplane. — see also self-starter 5 chiefly Brit : appetizer
▪ The team is playing only five regular starters.
▪ The car's starter needs to be replaced.
▪ He was a late starter in school. [=he started school later than most children] ▪ The question was a good conversation starter. ▪ He bought a starter kit for building a model airplane. — see also self-starter
for starters
— used to introduce a statement that is the first in a series of statements ▪ “Why don't you like him?” “Well, for starters [=first of all], he was rude to my parents.”
