any one of the points of light seen in the sky at night; a person who is famous as a singer, actor, actress etc
famous, illustrious
Cases of word usage
1) a heavenly body (looking like a star with a bright center) and a less bright tail that moves round the Sun (comet)
2) a disturbance of the nervous system, with outbursts of uncontrollable emotion; uncontrolled excitement, e.g. in a crowd round a pop star (hysteria)
3) the heavenly body from which the earth gets warmth and light; any fixed star with planets (sun)