demarcate
verb (used with object)
to determine or mark off the boundaries or limits of.
Used to express a completed action that took place before another specific past action occurred.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Families had demarcated the bounds of their tiny floor space with cardboard boxes.
From The Wall Street Journal ● Dec. 11, 2015