n. [ F. réservoir, fr. LL. reservatorium. See Reservatory. ] 1. A place where anything is kept in store; especially, a place where water is collected and kept for use when wanted, as to supply a fountain, a canal, or a city by means of aqueducts, or to drive a mill wheel, or the like. [ 1913 Webster ]

2. (Bot.) A small intercellular space, often containing resin, essential oil, or some other secreted matter. [ 1913 Webster ]

3. (Med.) A large quantity of infectious microorganisms resident in animals other than man, potentially capable of being transmitted to humans. [ PJC ]

3. (Med.) a large quantity of infectious microorganisms or parasites resident in animals other than man, potentially capable of being transmitted to humans; especially, such organisms in animals where they do little or no harm to the host. [ PJC ]

4. A large supply or stock of anything which may be rapidly put to use; a reserve. [ PJC ]

Receiving reservoir (Water Works), a principal reservoir into which an aqueduct or rising main delivers water, and from which a distributing reservoir draws its supply. [ 1913 Webster ]

n. One who reserves; a reserver. [ 1913 Webster ]

n. 1. control by a servomechanism. [ PJC ]

2. a servomechanism. [ PJC ]

n. an electronically controlled mechanical or hydraulic device permitting a large action or strong forces to be controlled by a small electrical signal. [ PJC ]

n. [ Sometimes erroneously spelt serro-motor. ] [ F. servo-moteur. See Serf; Motor. ] 1. (Mach.) A relay apparatus; specif.: (a) An auxiliary motor, regulated by a hand lever, for quickly and easily moving the reversing gear of a large marine engine into any desired position indicated by that of the hand lever, which controls the valve of the motor. (b) In a Whitehead torpedo, a compressed-air motor, for moving the rudders so as to correct deviations from the course. [ Webster 1913 Suppl. ]

2. a motor which forms part of a servomechanism. [ PJC ]