We don't have synonyms for derringers yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are derringer, herringer and deringer.
(n) :
A type of very small, concealable pistol with one or two barrels, but without any loading system or magazine.
(n) :
(dated, 1800s) Alternative form of derringer (“pistol”). [A type of very small, concealable pistol with one or two barrels, but without any loading system or magazine.]
(n) :
A type of very small, concealable pistol with one or two barrels, but without any loading system or magazine.
(n) :
(dated, 1800s) Alternative form of derringer (“pistol”). [A type of very small, concealable pistol with one or two barrels, but without any loading system or magazine.]