Noun
The angler.
Any very large ray, especially any species of the genus Manta or Cepholoptera, some of which become more than twenty feet across and weigh several tons. See also Ox ray, under Ox.
Any large cephalopod, as a large Octopus, or a giant squid (Architeuthis). See Devilfish.
Source: Webster's dictionarysea-devil