Definition of "wart" in English

noun

1. (pathology) A type of deformed growth occurring on the skin caused by the human papillomavirus (HPV).

   • A wart has appeared on my toe.

2. Any similar growth occurring in plants or animals, such as the parotoid glands in the back of toads.

3. (informal, figurative) Anything unsightly or undesirable; a blemish.

4. (programming, slang, derogatory) Any of the prefixes used in Hungarian notation.