Reservoir
<B>1.</B> A place where something such as water is kept in reserve.<BR><B>2.</B> The part of a device in which something is kept in reserve or stored, as an Ommaya reservoir.<BR><B>3.</B> For an infectious agent, an animal, person, plant, soil, or other substance in which the agent normally abides.
See: Reservoir of infection.
<BR>From the French reservoir, from reserver meaning to reserve