RESERVOIR

reservoir. Reservoir, n. a large bason or conservatory of water

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Res″er‐voir′ (rĕz″ẽr‐vwôr′; 277), n. [[F. réservoir, fr. LL. reservatorium. See Reservatory.]] 1. 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.
2. 2. (Bot.) A small intercellular space, often containing resin, essential oil, or some other secreted matter.
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.