Dreaming about length may symbolize the concept of time and the passage of time. It can represent your perception of how long or short a specific period or task is in relation to your expectations or desires. This dream could be reflecting your concerns about the duration of a particular project, relationship, or waiting period in your waking life. Alternatively, it could also signify your desire for things to be more enduring or for certain moments to last longer. The interpretation of this dream can vary depending on the specific context and emotions experienced within the dream.