General English

  • noun a large, usually artificial, lake where drinking water is kept for pumping to a city

General Science


Cars & Driving

  • noun the space between the outer and inner tubes of a double-tube shock absorber which takes up the oil squeezed out of the working chamber corresponding to the volume of the piston rod immersed in the working chamber


  • A tank or receptacle used for the accumulation and retention of a fluid.


  • noun a cavity in an organ or group of tissues in which fluids collect and are stored
  • noun an organism in which a parasite lives and develops without damaging it, but from which the parasite then passes to another species which is damaged by it
  • noun a part of a machine or piece of equipment where liquid is stored for it to use


  • noun a natural or man-made lake, used as a supply of water