What is an 'allusion' in literature?

An allusion in literature is defined as a reference to another work of literature, person, or event, which enriches the text by adding layers of meaning or context that the reader can draw from their existing knowledge. This technique allows authors to connect their works with broader cultural, historical, or literary themes, inviting readers to explore deeper interpretations and to engage with the text in a more meaningful way. For example, referencing classical mythology or historical events can evoke particular emotions or ideas without requiring lengthy explanations, relying instead on the reader's familiarity with those references. This makes allusions a powerful tool in literature for enhancing themes and creating resonance across different contexts.