Lump /(lŭmp)/

1. A small mass of matter of irregular shape; an irregular or shapeless mass; as, a lump of coal; a lump of iron ore.
2. A mass or aggregation of things.
3. A projection beneath the breech end of a gun barrel. (Firearms)

   They may buy them in the lump.

imp. & p. p. Lumped; p. pr. & vb. n. Lumping

1. To throw into a mass; to unite in a body or sum without distinction of particulars.

   The expenses ought to be lumped together.

2. To take in the gross; to speak of collectively.

   Not forgetting all others, . . . whom for brevity, but out of no resentment to you, I lump all together.

3. To get along with as one can, although displeased; as, if he doesn't like it, he can lump it. [Low]