Definition of remoras:
(n) :
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.
(n) :
(heraldry) A serpent.
(n) :
(obsolete) A delay; a hindrance, an obstacle.
(n) :
(obsolete, surgery) A surgical instrument, intended to retain parts in their places.