FINBACK
finback, finback whale, fin whale, common rorqual, Balaenoptera physalus
(noun) large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific
Source: WordNet® 3.1
Etymology
Noun
finback (plural finbacks)
A large baleen whale, Balaenoptera physalus, that has a ridge on its back; the fin whale.
Synonyms
• finner
Anagrams
• backfin
Source: Wiktionary
Fin"back`, n. (Zoöl.)
Definition: Any whale of the genera Sibbaldius, Balænoptera, and allied
genera, of the family Balænopteridæ, characterized by a prominent fin
on the back. The common finbacks of the New England coast are
Sibbaldius tectirostris and S. tuberosus.
Source: Webster’s Unabridged Dictionary 1913 Edition