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The verb FLESH OUT has 3 senses: 1. make fat or plump. 2. add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing. 3. become round, plump, or shapely. Familiarity information: FLESH OUT used as a verb is uncommon.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  slaughter, massacre, mass murder, carnage, butchery(verb) the savage and excessive killing of many people. 2  massacre, slaughter, mow down(verb) kill a large number of people indiscriminately.