Denshi Jisho — Online Japanese dictionary

いわや cavern; grotto
Noun 
やぐら caves dug as tombs in and around Kamakura during the Kamakura and Muromachi periods
Noun, Usually written using kana alone 
まくつ 1: den of thieves;
2: brothel; red-light district;
3: (Colloquialism) cluttered room
Noun 
りくつ theory; reason
Noun 
どうくつ cave
Common word, Noun, No-adjective 
がんくつ cave; cavern
Noun 
がんくつ cave; cavern
Noun 
せんくつ enchanted cave
Noun 
そうくつ den; haunt; hangout; home
Noun 
へんくつ eccentricity; bigotry; obstinacy
Na-adjective, Noun 
阿片 あへんくつ opium den
Noun 
鴉片 あへんくつ opium den
Noun 
の中 いわやのなか inside of a cave
Noun 
私娼 ししょうくつ brothel; house of ill repute; red-light district
Noun, Archaism 
貧民 ひんみんくつ slums
Noun 
ほらあなぐま cave bear (extinct, Ursus spelaeus)
Noun, Usually written using kana alone 
狡兎三 こうとさんくつ very shrewd in preparing a means of escape; being very good at escaping danger
Noun 

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