Noun
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a large piece of something without definite shape
"a hunk of bread"
"a lump of coal"
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an awkward stupid person
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an abnormal protuberance or localized enlargement
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a compact mass
"a ball of mud caught him on the shoulder"
Verb
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group or chunk together in a certain order or place side by side
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put together indiscriminately
"lump together all the applicants"