- Any very large ray, especially any species of the genus Manta or Cephaloptera.
- Any large cephalopod.
- The angler fish, Lophius piscatorius.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for sea devil in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)