reservoir (n.)

• archives
• armory
• arsenal
• attic
• backlog
• bank
• basement
• bay
• bin
• bookcase
• box
• bunker
• buttery
• cache
• cellar
• chest
• cistern
• closet
• conservatory
• crate
• crib
• cupboard
• dam
• depository
• depot
• dike
• dock
• drawer
• dump
• exchequer
• fishpond
• godown
• hoard
• hold
• hutch
• inventory
• lagoon
• laguna
• lake
• library
• linn
• loch
• locker
• lough
• lumberyard
• magazine
• mere
• millpond
• nyanza
• plash
• pond
• pool
• puddle
• rack
• repertory
• repository
• reserve
• reserves
• resource
• rick
• salina
• savings
• shelf
• stack
• stock
• stockpile
• storage
• store
• storehouse
• storeroom
• sump
• tank
• tarn
• treasury
• vat
• vault
• warehouse
• well