In Hungarian it is "bástya" ("bastion") and in Hebrew language it is called "צריח" (pronounced "Tzariach", meaning "fortified tower"). In the British Museum's collection of the medieval Lewis chess pieces the rooks appear as stern warders, or wild-eyed Berserker warriors. Rooks usually are similar in appearance to small castles, and as a result a rook is sometimes called a "castle" . In modern chess literature this term is rarely, if ever, used. In some languages the rook is called a ship: Thai เรือ ("reūa"), Armenian Նավակ ("navak"), Russian ладья ("ladya"), Javanese ꦥꦫꦄꦲꦸ ("prahu"). This may be because of the use of an Arabic style V-shaped rook piece, which some may have mistaken for a ship. It is possible that the rendition comes from Sanskrit "roka" (ship), but this was challenged by the fact that no "chaturanga" pieces ever called a "roka". Murray argued that the Javanese could not visualize a chariot moving through the jungles in sweeping fashion as the rook. The only vehicle that moved in straight fashion was ship, thus they replaced it with prahu. Murray, however, did not give explanation about why the Russians called it a ship. In Bulgarian, it is called the cannon (Топ, Romanised "top"). In Kannada, it is known as ಆನೆ ("āāne"), meaning "elephant". This is unusual, as the term "elephant" is in many other languages applied to the bishop. Chess rooks frequently occur as heraldic charges. Heraldic rooks are usually shown as they looked in medieval chess-sets, with the usual battlements replaced by two outward-curving horns. They occur in arms from around the 13th century onwards. In Canadian heraldry, the chess rook is the cadency mark of a fifth daughter. Unicode defines two codepoints for rook:  ♖ U+2656 White Chess Rook (HTML ♖)  ♜ U+265C Black Chess Rook (HTML ♜)