With or without water it can be used as a barrier, as an alternative for a fence.
A trench is a long narrow ditch.
Types and applications include:
... This is most common in commerce,
in which a parternship between investors[?] to start a business
is usually called a "society".
See evolution of societies, ...
Buy Halloween Costumes
Kids.Net.Au - kids safe portal for children, parents, schools and