■ noun
1》 a loose mixture of small stones, often used for paths and roads.
2》 Medicine aggregations of crystals formed in the urinary tract.
■ verb ( ~s , ~ling , ~led ; US ~s , ~ing , ~ed )
1》 cover with ~.
2》 US informal anger or annoy.
Origin
ME: from OFr., dimin. of grave (see grave 4 ).