What is the meaning of Remora?

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.

A serpent.

A delay; a hindrance, an obstacle.

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

a remora; any of various elongate brown 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

remora (fish)

hesitation, scruple

remora (fish)

Source: wiktionary.org