lump1 S2 [countable]
a small piece of something solid, without a particular shape:
Strain the custard to remove lumps.
Melt a lump of butter in your frying-pan.
a small hard swollen area that sticks out from someone's skin or grows in their body, usually because of an illness:
You should never ignore a breast lump.
a small square block of sugar:
One lump or two?
a feeling that you want to cry:
There was a lump in her throat as she gazed at the child.
5 American English informal
to accept the bad things that happen and not let them affect you:
According to experts, the company took its lumps but is on the road to profitability.
6 British English spoken
someone who is stupid or clumsy:
He's a big fat lump.