1. (noun)lump a hard irregularly shaped piece a lump of coal/ice/clay; too many lumps in the batter
2. lump a swollen or hard spot under the skin a lump in her breast
3. lump a lump in your throat the feeling in your throat when you might cry I couldn't speak because of a huge lump in my throat.
4. (verb)lump to force two different ideas or things together lawmakers who lump unpopular proposals with popular ones so that they will become law; You can't lump students of such different abilities together.
Definition of 'Lump'
Webster Dictionary
1. (noun)Lump a small mass of matter of irregular shape; an irregular or shapeless mass; as, a lump of coal; a lump of iron ore
2. (noun)Lump a mass or aggregation of things
3. (noun)Lump a projection beneath the breech end of a gun barrel
4. (verb)Lump to throw into a mass; to unite in a body or sum without distinction of particulars
5. (verb)Lump to take in the gross; to speak of collectively
6. (verb)Lump to get along with as one can, although displeased; as, if he does n't like it, he can lump it