Definition of lump verb from the Oxford Advanced American Dictionary

 

lump

 verb
verb
NAmE//lʌmp//
 
lump A and B togetherlump A (in) with BVerb Forms present simple I / you / we / they lump
 
he / she / it lumps
 
past simple lumped
 
-ing form lumping
 
 
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  • to put or consider different things together in the same group You can't lump all Asian languages together.
  • Idioms
    lump it(informal)
     
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    to accept something unpleasant because there is no other choice I'm sorry you're not happy about it but you'll just have to lump it. That's the situation—like it or lump it!
    See the Oxford Advanced Learner's Dictionary entry: lump