From WordNet (r) 2.0 (August 2003) [wn]:
gritty
adj 1: composed of or covered with relatively large particles;
"granular sugar"; "gritty sand" [syn: farinaceous,
coarse-grained, grainy, granular, granulose,
mealy, sandy]
2: willing to face danger [syn: game, gamy, gamey,
mettlesome, spirited, spunky]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Gritty \Grit"ty\ (-t[y^]), a.
1. Containing sand or grit; consisting of grit; caused by
grit; full of hard particles.
[1913 Webster]
2. Spirited; resolute; unyielding. [Colloq., U. S.]
[1913 Webster]