a star: one of the lights of the night sky, and by extension the heavenly bodies as a group.
Across the whole Hebrew Bible this word means one thing: a star. Every appearance can be carried by the plain English word, which is why the lexicons agree on a single gloss. What changes from place to place is not the meaning but the use the writer makes of it, and the range of those uses is unusually wide.
Stars in the Bible are first of all real lights that God made, hung in the sky, and counts and names one by one. From that bedrock the picture branches in several directions. Because they are countless, they become the standard image for descendants too many to number, the heart of the promise to Abraham. Because the ancient world treated them as living powers, the older poetry can still show them as members of God's heavenly court, fighting in his battles or singing at creation, even as other parts of the Bible flatly forbid worshiping them. And because a single bright star rising in the east is an image of glory and royal arrival, one famous line speaks of a star coming out of Jacob, a king on the horizon.
The same brightness runs the other way too. When God judges, the lights go out: sun, moon, and stars go dark, and the world seems to slide back toward the formless dark before creation. At the far end, the book of Daniel turns the image into hope, promising that the wise who turn many to righteousness will shine like the stars forever.
So this is one word with one sense, stretched across creation, family, worship, kingship, and the end of days. The senses below sort those uses; they are facets of a single shining thing, not different words.