cacuminal

/K AH0 K Y UW1 M AH0 N AH0 L/
noun
  1. 1

    A sound pronounced using a retroflexed tongue.

adjective
  1. 1

    Pertaining to a point, top, or crown.

  2. 2

    Pronounced using a retroflexed tongue.

Source: https://en.wiktionary.org/wiki/cacuminal