Pushya means nourishment, and the cow's udder is a precise symbol for the kind it means. Milk sustains rather than excites. It is produced continuously, it goes to someone who cannot yet feed themselves, and the animal producing it gets nothing obvious in return.
In Hindu mythology, Brihaspati is the guru of the gods, the teacher and priest of the devas, and the deity of the planet Jupiter. He presides here. Saturn rules the star in the dasha system. Those two layers do different jobs and the star needs both. Brihaspati supplies the teaching and the judgement. Saturn supplies the maintenance, which is the part nobody thanks anyone for.
Pushya is widely considered the most auspicious of the twenty seven nakshatras. When it falls on a Thursday you get Guru Pushya yoga, and on a Sunday, Ravi Pushya. Families buy gold, start businesses and begin new ventures on those days, and jewellers across India advertise them. If you have wondered why a random Thursday suddenly has queues outside jewellery shops, this star is why. Today's panchang shows which nakshatra the Moon is in, so you can see when Pushya comes round.
Its shakti (the special power a nakshatra carries) is sacred radiance, the ability to generate the kind of energy that gathers a community. That is why Pushya turns up so often around teachers, temples, institutions and households that hold a lot of people together.
Pushya is known for reliability, teaching and care. Things here become dependable because they are looked after continuously.