leader
//ˈliːdər//
Noun
leaderSingular
leadersPlural
1
A person who leads or commands a group, organization, or country
She is a strong leader who inspires her team.
2
A person or thing that is the most successful or advanced in a particular area
This company is a leader in smartphone technology.
3
The principal player in a music group or orchestra section
She is the leader of the violin section in the orchestra.
4
A short strip of blank film or tape at the beginning or end of a reel
The film leader was damaged, so we had to cut it off before loading the reel.