Zeugma is a rhetorical device in which a single word, usually a verb or an adjective, governs or modifies two or more words in a sentence, creating a unique connection between them. This technique often adds depth or humor to the expression by linking disparate ideas or images. For example, in the phrase "She broke his car and his heart," the verb "broke" applies to both "car" and "heart," illustrating both a physical and emotional impact. Zeugma can enhance writing by creating vivid imagery and encouraging readers to think more deeply about the relationships between the words.