Source : Webster's Revised Unabridged Dictionary (1913)
Standpipe \Stand"pipe`\, n.
1. (Engin.) A vertical pipe, open at the top, between a
hydrant and a reservoir, to equalize the flow of water;
also, a large vertical pipe, near a pumping engine, into
which water is forced up, so as to give it sufficient head
to rise to the required level at a distance.
2. (Steam Boiler) A supply pipe of sufficient elevation to
enable the water to flow into the boiler, notwithstanding
the pressure of the steam. --Knight.
Source : WordNet®
standpipe
n : a vertical pipe