Answer:
In the given passage, the word puncheon refers to a smoothed log used during summer time as this is cool.
<u>Explanation:
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This extract, taken from Twain's Huckleberry Finn, is trying to create a scene, where the protagonist enters the church and finds a dog (hog) or two inside the church. He is trying to say that dogs like smooth logs to sleep on as they become very cool during the night on any summer day. Therefore, the word puncheon, here, describes a smoothed log.
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