Sentence:  The <WSD>combs</WSD> of the wild bees are found on overhanging precipices, and the only means by which they can be reached is to descend from above on narrow cane ladders just wide enough for a man's foot, and often 300 feet to 400 feet long. 
Meaning of the word marked with <WSD> tags:  A structure of hexagon cells made by bees for storing honey; honeycomb.