What is "kortik"

Kortik (Ко́ртик) may be

• the Russian for naval dirk
• a nickname for Kashtan CIWS, a weapons system of the Russian navy
• a 1948 children's book by Anatoly Rybakov, translated into English as The Dirk
• Kortik (1954 film), an adaptation of Rybakov's book, by Vladimir Vengerov and Michael Schweitzer
• Kortik (1973 film), an adaptation of Rybakov's book for TV by Nikolai Kalinin