If something is sored, it has a wound or injury on the skin.
The word sored can make people think of pain and discomfort.
Examples:
The dog's paw was sored from running too much.
Her arm was sored after falling off her bike.
The sored knee made it hard to walk.
His sored back made it hard to sit down.
The sored spot on his foot hurt a lot.
The sored spot on her arm was red and painful.