verruca (n.) Look up verruca at Dictionary.com
1560s, from Latin verruca "a wart; a hillock," also "a fault, failing," a word of uncertain origin. De Vaan suggests it is from a PIE word meaning "height, top," and compares Old Irish ferr "better," Sanskrit varsman- "height, top," Lithuanian viršus, Russian verx "top, upper part." Related: Verrucose.