1a long speech or piece of writing, typically one regarded as tedious:her criticism appeared in the form of screeds in a local film magazine
2 [mass noun] a levelled layer of material (e.g. cement) applied to a floor or other surface.
[count noun] a strip of plaster or other material placed on a surface as a guide to thickness.
level (a floor or layer of concrete) with a straight edge using a back and forth motion while moving across the surface.
Middle English: probably a variant of the noun shred. The early sense was 'fragment cut from a main piece', then 'torn strip', whence (via the notion of a long roll or list) screed (sense 1 of the noun)