NATTERJACK TOAD Meaning of NATTERJACK TOAD in English ■ noun a small toad with a bright yellow stripe down its back. [ Bufo calamita .]OriginC18: perh. from natter (because of its loud croak) + jack 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004