Barley that has been germinated and then roasted to varying degrees. Roasting stops the germination growth. It is usually sold by the varying degree of roasting (eg pale, amber, black).
A syrup or powder made from malt. This is a concentrated wort that saves mashing the malt. Widely used by kit manufacturers and by home beer makers.
Coarsely ground malt and hot water, cooked slowly to convert the starches into fermentable sugars.
The container that you mash in, such as Electrim Bin, Bru-Heat Boiler etc.