bumpkin (n.) Look up bumpkin at Dictionary.com
"awkward country fellow," 1560s, probably from Middle Dutch bommekijn "little barrel," diminutive of boom "tree" (see beam (n.)). Apparently, though itself Dutch, it began as a derogatory reference to Dutch people as short and dumpy. The Dutch word came into English in a more literal sense in 1630s as nautical bumkin "short boom projecting from each quarter of a vessel."