Piece dyed cloth has been dyed after it has been woven, as opposed to cloth that is woven with pre-dyed fibres.
In hand block printing, the calico fabrics are first woven unbleached, then bleached by the sun and then dyed in the right ground colour before they are printed. Wool and silk are usually yarn dyed, cotton and linen piece dyed.
With screen printing the design and the ground are created at the same time, with a different screen for each colour, but always onto an undyed or bleached ground