Sentence:  ...Van Helsing stood up and said, "Now, my dear friends, we go forth to our terrible enterprise. Are we all armed, as we were on that night when first we visited our enemy's <WSD>lair</WSD>. Armed against ghostly as well as carnal attack?" 
Meaning of the word marked with <WSD> tags:  A place inhabited by a criminal or criminals, a superhero or a supervillain; a refuge, retreat, haven or hideaway.