Main Entry: patch

Pronunciation: \ˈpach\

Function: noun

1 a : a piece of material used medically usually to cover a wound or repair a defect—see patch graft b : a usually disk-shaped piece of material that is worn on the skin and contains a substance (as a drug) that is absorbed at a constant rate through the skin and into the bloodstream <a nicotine patch>—called also skin patch c : a shield worn over the socket of an injured or missing eye
2 : a circumscribed region of tissue (as on the skin or in a section from an organ) that differs from the normal color or composition <sometimes great white patches develop on the tongue, the cheeks, and the gums—Morris Fishbein>

—patch transitive verb

—patchy \-ē\ adjective, patch·i·er; patch·i·est