noun

• (astronomy) An arbitrary formation of stars perceived as a figure (especially one from mythology) or pattern, or a division of the sky including it, especially one officially recognized by astronomers; an asterism.
• (modern astronomy) Any of the 88 regions of the sky officially recognized by the International Astronomical Union, including all stars and celestial bodies in the region.
• (figurative) A configuration or grouping of related things.
• A wide, seemingly unlimited, assortment.
• (psychoanalysis) Synonym of complex (“a collection of ideas caused by repressed emotions that leads to an abnormal mental condition”)
• (sexuality) A network of connections between people who are in polyamorous relationships, for example between a person, their partner, and that person's partner.
• (space science) A fleet of satellites used for the same purpose.
• (astrology, obsolete)
• The configuration of planets at a given time (especially a person's birth), as believed to affect events on Earth, or used for determining a horoscope.
• A person's character or inclinations, supposedly determined by their horoscope.