(chemistry) A macromolecule having a single branch point from which linear chains (or arms) emanate.

(astronomy) any of a class of red giant stars having a high proportion of carbon because of helium burning

(astronomy) The star nearest to Earth's axis when extended above the North Pole: currently Polaris, formerly Thuban.

(astronomy) A bluish-white star in the constellation Canis Major; Alpha (α) Canis Majoris A. A vertex of the Winter Triangle and the brightest star in the night sky. It is actually a binary star with a white dwarf companion star.

(astronomy) A group of gravitationally bound stars and other material (such as nebulae and planets), conventionally with one generation of similarly aged stars from the same pre-stellar nebula.

Any of various echinoderms, of the class Ophiuroidea, that resemble starfish and have long, slender arms that regenerate when snapped off.

(music) A guest on a music or other recording. / (television) An actor on a television program who stars in one, or a few, episodes.

Of an actor: to star as a guest. / (sports) Of a player: to play as a guest of another team.

(astronomy) A nova or supernova recorded by the Chinese.

A shuriken.