gravel
gravel (grăvʹəl) noun
1. An unconsolidated mixture of rock fragments or pebbles.
2. Pathology. The sandlike granular material of urinary calculi.
verb, transitive
graveled or gravelled, graveling or gravelling, gravels or gravels
1. To apply a surface of rock fragments or pebbles to.
2. To confuse; perplex.
3. Informal. To irritate.
[Middle English, from Old French gravele diminutive of grave, pebbly shore, of Celtic origin.]