The term "burr of a voice" refers to a distinctive quality in speech characterized by a rough, raspy, or gravelly sound. This vocal quality can be influenced by various factors, including a person's anatomy, health, and emotional state. A burr can add a unique texture to the voice, making it more memorable or expressive. People with a burr in their voice may be perceived as having a strong or rugged character. This vocal trait is often associated with certain regional accents or dialects, such as those found in Scotland or Appalachia. The burr can evoke a sense of warmth or authenticity in communication.