1. 
[syn: farinaceous, coarse-grained, grainy, granular, granulose, gritty, mealy]
The Collaborative International Dictionary of English v.0.48:
Grainy \Grain"y\ (gr[=a]n"[y^]), a.
   Resembling grains; granular.
   [1913 Webster]
WordNet (r) 3.0 (2006):
grainy
    adj 1: composed of or covered with particles resembling meal in
           texture or consistency; "granular sugar"; "the
           photographs were grainy and indistinct"; "it left a mealy
           residue" [syn: farinaceous, coarse-grained, grainy,
           granular, granulose, gritty, mealy]
Moby Thesaurus II by Grady Ward, 1.0:
54 Moby Thesaurus words for "grainy":
   arenaceous, arenarious, breccial, brecciated, broken, bumpy,
   choppy, coarse, coarse-grained, corrugated, cross-grained, grained,
   granular, granulate, granulated, gravelly, gritty, gross, homespun,
   horripilant, inequal, irregular, jolty, linsey-woolsey, pebbled,
   pebbly, pimply, pitted, pocky, potholed, rank, ripply, rough,
   rough-cast, rough-grained, rough-hewn, ruffled, rutted, rutty,
   sabulous, sandy, shagged, shaggy, shingled, shingly, textured,
   uneven, unkempt, unlevel, unpolished, unrefined, unsmooth,
   ununiform, wimpled