Lacuna/ləˈkuːnə/ Definition 1 of 3Pro Tip 1/3Conceptual Voids Used metaphorically to describe an area lacking information or understanding. Her explanation has several lacunae, leaving us confused. Pro Tip 2/3Different Domains Recognize that lacuna can refer to gaps in various contexts, not just physical spaces. This theory has a lacuna that needs addressing. Pro Tip 3/3Abstract Usage Although abstract, a lacuna can indicate a tangible absence that has significance. The museum's collection has a lacuna in Renaissance art.