When it comes to describing a "short line," there are many different synonyms that one can use. Some common options include "brief line," "concise line," "limited line," "abridged line," and "summary line." Each of these choices conveys the idea of something that is not very long or extensive, whether it refers to a piece of writing, a piece of music, or even a physical object like a rope or a queue. In a more general sense, any term that connotes brevity or a lack of length could be used as a synonym for "short line".