A herniated disc may be caused by: 1  Wear and tear of the disc. As you age, your discs dry out and aren't as flexible. 2  Injury to the spine. This may cause tiny tears or cracks in the hard outer layer of the disc.
Definition of wart. 1a : a horny projection on the skin usually of the extremities produced by proliferation of the skin papillae and caused by any of numerous human papillomaviruses âcalled also verruca vulgarisb : any of numerous similar skin lesions not caused by viruses.
1. wart. 2. one of the wartlike elevations on the endocardium in various types of endocarditis. adj., adj verÂ´rucose, verruÂ´cous. verruca plaÂ´na a small, smooth, usually skin-colored or light brown, slightly raised wart sometimes occurring in great numbers; seen most often in children. verruca plantaÂ´ris plantar wart.