Definition

/stɑː(ɹ)/

noun

Any small luminous dot appearing in the cloudless portion of the night sky, especially with a fixed location relative to other such dots.
A luminous celestial body, made up of plasma (particularly hydrogen and helium) and having a spherical shape. Depending on context the sun may or may not be included.
A concave polygon with regular, pointy protrusions and indentations, generally with five or six points.
An actor in a leading role.
“Many Hollywood stars attended the launch party.”
An exceptionally talented or famous person, often in a specific field; a celebrity.
“His teacher tells us he is a star pupil.”

verb

To appear as a featured performer or headliner, especially in an entertainment program.
To feature (a performer or a headliner), especially in a movie or an entertainment program.
To mark with a star or asterisk.
To set or adorn with stars, or bright, radiating bodies; to bespangle.
To shine like a star.