Definition of BOUNDARY

a real or imaginary point beyond which a person or thing cannot go <parents have to set boundaries for their children, and the children want them to>
the line or relatively narrow space that marks the outer limit of something <that chalk line marks the boundary of our playing field>

March 27, 2015
quiescent Hear it
Tranquilly at rest or causing no trouble
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears