"Plug horse" is a phrase synonymous with "workhorse" or "jack-of-all-trades." It refers to someone or something that can be relied upon to perform multiple tasks efficiently. Similar terms that embody this concept include "versatile," "all-rounder," "utility player," or "multitasker." These words emphasize the ability to tackle various responsibilities or adapt to different roles effortlessly. A "plug horse" can be likened to a reliable machine, capable of fitting into any role seamlessly. Whether used in professional or everyday contexts, these synonyms convey the valuable trait of being adaptable and dependable, making them essential assets in any situation.