- to master (a skill)
This usage refers to achieving a high level of proficiency in a particular skill or discipline.
Mastering this instrument is difficult.
He practices every day to master English.
- proprietor; manager; owner; barkeeper
In this sense, it refers to someone who owns or manages a business or establishment, often used in hospitality contexts.
The proprietor of that café is a kind person.
The barkeeper often talks to the customers.
- leader; chief; head
Here, it denotes someone who is in charge or holds a position of authority, often used in settings like organizations or groups.
He works as the leader of the project.
The team's chief is very experienced.
- master (of arts, science, etc.)
This meaning refers to a postgraduate degree awarded by universities, indicating a high level of knowledge in a specific field.
She obtained a master's degree in fine arts.
He holds a master's degree in science.
- master (recording)
In this context, it refers to the original recording from which copies are made, usually in music or film production.
The master for the album is already complete.
It is important to check the movie's master.
- master (device)
This usage relates to a device or mechanism that controls or manages other devices, often seen in technology or engineering contexts.
That master device controls all the sensors.
The new master is more efficient than the previous model.