Sounds like a typo for "country bumpkin". I was surprised when I looked in dictionary and found that the first meaning given for "bumpkin" is a nautical term I never heard before.

1 a short boom projecting from a sailing ship, used as in securing a stay or brace
2 5prob. < MDu bommekijn, small cask < bomme, a cask + 3kijn, dim. suffix6 an awkward or simple person from the country