WordNet
n. a filter to remove impurities from the water supply
Wikipedia
A water filter removes impurities from water by means of a fine physical barrier, a chemical process or a biological process. Filters cleanse water to different extents for purposes such as providing agricultural irrigation, accessible drinking water, public and private aquaria, and the safe use of ponds and swimming pools.
Usage examples of "water filter".
A water filter from the survivor kit would let them filter enough water for the first urnful of coffee-just to be on the safe side.
A water filter from the survivor kit would let them filter enough water for the first urnful of coffee - just to be on the safe side.
There was a fish bowl on the wall beside the bed, a sealed metre-wide globe with a complicated-looking water filter grafted on to one side.
But Slick did a lot of things around Factory that Gentry wouldn't have wanted to do himself, like making sure there was food, and if something major broke down, if the wiring shorted or the water filter packed it in, it was Slick who had the tools and did the fixing.
Steve and the other wingmen grabbed their helmets, made sure the folded maps in the clear pockets on their thighs showed the correct section of terrain, checked that their holstered air pistol was secure, that their combat knife was firmly clipped in its scabbard on the outside of the right calf, and that the zips on the leg and chest pockets holding their emergency water filter and survival rations were properly closed.
Split into two separate carrypacks, the supplies included ration bars, water filter/bottles, medpacs, glow rods, a good supply of syntherope, a spare blaster, a survival tent with bedroll, and even a small selection of low-yield grenades.
Each filled the tin dish at the water filter opposite the stove, and retired with the whole stock in trade to the platform of the car.
I'm sure you can devise a water filter with your bare hands and know which side of the tree the moss grows on.
The lightweight, rip-proof pack he purchased filled rapidly with a good supply of basic emergency concentrates and vitamins, a permanent water filter and purifier, insect-proof bedroll and tent, fuel-cell cooker, and mapping ware for his card.