What does it mean to dream about legs?
Legs usually stand for support, movement, and independence, your ability to stand and to carry yourself forward.
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 mobility and the body's strength, and at times sexual associations.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.Jung
Jung would see the capacity to move through life under one's own power; weak or failing legs mark a loss of support.
Jungian concept (our summary).Modern
Continuity ties legs to waking concerns about independence, progress, and confidence, the power to move ahead.
Continuity hypothesis (our summary).Mythological
The lamed god and the wounded hero, from Hephaestus to the Fisher King, made the injured leg a sign of power bought at a cost.
Rosmerta Publishing editorial synthesis (after Bulfinch).