The word "groom" generally refers to a person who takes care of horses, especially in a stable setting. It can also mean to prepare or train someone or something for a specific purpose, such as making a person ready for an event, usually a wedding. Additionally, it can refer to the act of cleaning or maintaining oneself, like grooming one's hair or appearance.
The word "groom" comes from the Old English "groma," which means "man" or "young man." It has evolved through languages and has taken on various meanings related to care and maintenance, particularly in relation to horses and personal appearance.