"lump" in the noun sense
1. ball, clod, glob, lump, clump, chunk
a compact mass
"a ball of mud caught him on the shoulder"
2. swelling, puffiness, lump
an abnormal protuberance or localized enlargement
3. lout, clod, stumblebum, goon, oaf, lubber, lummox, lump, gawk
an awkward stupid person
4. hunk, lump
a large piece of something without definite shape
"a hunk of bread"
"a lump of coal"
"lump" in the verb sense
1. lump, chunk
put together indiscriminately
"lump together all the applicants"
2. collocate, lump, chunk
group or chunk together in a certain order or place side by side
Source: WordNet® (An amazing lexical database of English)
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