From WordNet (r) 2.0 (August 2003) [wn]:
gravelly
adj 1: abounding in small stones; "landed at a shingly little
beach" [syn: pebbly, shingly]
2: unpleasantly harsh or grating in sound; "a gravelly voice"
[syn: grating, gravel, rasping, raspy, rough]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Gravelly \Grav"el*ly\, a.
Abounding with gravel; consisting of gravel; as, a gravelly
soil.
[1913 Webster]