Cold sore Meaning, Definition & Usage

  1. noun caused by herpes simplex virus type 1 (HSV-1)
    herpes labialis; fever blister; oral herpes.

WordNet


Definitions
  1. (Med.), a vesicular eruption appearing about the mouth as the result of a cold, or in the course of any disease attended with fever. causative virus Herpes simplex

Webster 1913