What does it mean to dream about saw?
A saw usually stands for cutting through or dividing something, so it helps to ask what was being severed and whether it felt useful or alarming.
Four ways to read it
Each reading below comes from a named tradition and a cited source, so you can see where it came from and decide what fits your dream.
Freud
Freud would read the cutting tool as an image of aggression and of severing a tie, the sharp edge that divides what was once whole. A saw can carry the urge to cut something away from your life.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.Jung
Jung might see the saw as the force that separates and breaks down, clearing the old to make room for new growth. What it cuts can show a bond or a structure you are ready to part with.
Jungian concept (our summary).Modern
A loud or threatening saw can set off the brain's rehearsal of danger, keeping you alert to a sharp tool that could harm. The fear it stirs often mirrors a real sense of something cutting or destructive nearby.
Threat-simulation theory (our summary).Mythological
The blade that cuts and fells runs through myth as the axe and the cleaving edge that brought down the great tree or the standing thing. To cut something down was both an act of clearing and a kind of violence.
Rosmerta Publishing editorial synthesis (after Frazer; Brewer).