remoras

/R IH0 M AO1 R AH0 Z/
noun
  1. 1

    Any of various elongate fish from the family Echeneidae, the dorsal fin of which is in the form of a suction disc that can take a firm hold against the skin of larger marine animals.

  2. 2

    A serpent.

  3. 3

    A delay; a hindrance, an obstacle.

  4. 4

    A surgical instrument, intended to retain parts in their places.

Source: https://en.wiktionary.org/wiki/remora, https://en.wiktionary.org/wiki/remoras