To "strengthen" or "fortify" means to make something stronger or more secure. This can apply to physical structures, like buildings or walls, where additional materials or reinforcements are added to withstand external pressures. It can also refer to enhancing skills or abilities, such as improving one's knowledge or physical fitness. In a broader context, strengthening can involve emotional or mental resilience. For example, individuals may engage in practices like mindfulness or therapy to fortify their mental health. Additionally, communities often work together to strengthen social ties and support systems, creating a more robust environment for everyone involved.