spina

/S P IY1 N AH0/
noun
  1. 1

    (anatomy) A spine; the backbone.

  2. 2

    (music) One of the quills of a spinet.

  3. 3

    (historical) A barrier dividing the Ancient Roman hippodrome longitudinally.

  4. 4

    A class of biocybernetic methods used in endocrinology for diagnostics and clinical research.