恐竜【きょうりゅう】
dinosaur
竜巻【たつまき】
tornado, waterspout
竜王【りゅうおう】
Dragon King, promoted rook
登竜門【とうりゅうもん】
gateway to success, opening to honours, opening to honors
竜宮【りゅうぐう】
Palace of the Dragon King, palace from the story of Urashima Tarō (said to be located at the bottom of the sea)