the GNU version of the Collaborative International Dictionary of English
n. A noisy, swaggering, or worthless fellow; a rowdy.
The Century Dictionary and Cyclopedia
n. A fellow: a term of humorous contempt, often implying something awkward, silly, or weak in the person so designated.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a disreputable or clumsy man
Word Usage
"While it's probably true that the word "galoot" derived from a slur for African galley slaves, I would see it as ungracious and pedantic to bring this up with the implication that the person so informed must avoid the term for fear of transgressing the bounds of tolerance and responsibility."