Dictionary failure

[Tophe]

Got this from dictionary.com's thesaurus: Synonyms:  August gale, big blow, black blizzard, blast,

I have been very interested   to look into this Web dictionary revealed by Anthonyp... no result alas

Do some of you have other definition sources not yet mentioned in my books?
An official definition for twin-tail would help a lot, too - mainly: including twin-fin or not (Bf110, F-18)? even if choices have been made for our contest (P-38+P-82, not Bf110), just to know other points of view, from JMN teachers   ...