glomus

/ˈɡloʊ.məs/
noun
  1. A small group of blood vessels or nerve tissue, especially one that helps regulate blood flow or temperature.
    • Doctors examined the glomus body in the ear to check for abnormalities.
    • The glomus in the skin helps control body temperature by adjusting blood flow.
    • A glomus tumor can cause pain in the fingers or toes.