A more thorough explanation:

Definition: Frustrum terrae (pronounced fruh-struhm tair-ee) is a Latin term that refers to a piece of land that remains after a survey has been conducted.

Example: If a large piece of land is surveyed and divided into smaller plots, the remaining land that is not part of any of the plots is called a frustrum terrae.

Explanation: Frustrum terrae is a term that was commonly used in historical land surveys. When a surveyor divided a large piece of land into smaller plots, there would often be a small piece of land left over that did not fit into any of the plots. This leftover piece of land was called a frustrum terrae. The term is not commonly used today, but it is still important to understand its meaning in historical contexts.