The term "let" or "allow" refers to giving permission for someone to do something or permitting an action to take place. It is often used in everyday language to indicate that one person is granting another the freedom to act in a certain way. For example, a parent might let their child stay up late on a weekend. In legal contexts, "let" can also refer to leasing property, where a landlord allows a tenant to use a space in exchange for rent. This usage highlights the concept of granting rights or access to resources, such as a house or apartment.