Vocal cords give shape to the voice, so dream books read them as self-expression. Losing them is linked to feeling unheard; strong ones to a voice ready to be used.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.