whale's tail

/W EY1 L EH0 S T EY0 L/
noun
  1. 1

    Used other than figuratively or idiomatically: The tail of a whale.

  2. 2

    (slang) An alternative expression of the whale tail phenomenon where a thong peeks out above the waistband.

  3. 3

    (slang) The distal bifurcation of the left anterior descending coronary artery.