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English definition of “lump”

lump

noun [C]  /lʌmp/ us  
a solid mass without a regular shape: The gravy had lumps of flour in it. A lump is also a swelling under the skin: She found a lump under her arm.
lumpy
adjective  /ˈlʌm·pi/ us  
a lumpy pillow

lump

verb [T]  /lʌmp/ us  
to consider or deal with as a group: Children of various abilities are lumped together in one class.
(Definition of lump from the Cambridge Academic Content Dictionary © Cambridge University Press)
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