early 15c., "to curl up in a ball, to gather into a lump" (implied in lumped), from lump (n.). Transitive meaning "to put together in one mass or group" is from 1620s. Related: Lum [..]

"endure" (now usually in antithesis to like), 1791, apparently an extended sense from an older meaning "to look sulky, dislike" (1570s), of unknown origin, perhaps, as OED suggests [..]

early 14c., lumpe, "small mass of material, solid but of irregular shape" (1224 as surname), etymology and original sense unknown. Perhaps it was in Old English, but it is not recorded there [..]

Any mass in the breast or elsewhere in the body.

ball: a compact mass; "a ball of mud caught him on the shoulder" put together indiscriminately; "lump together all the applicants" collocate: group [..]

One of several projections located on the underside of the barrel or barrels on top break action guns, which serves to secure the barrels to the action or receiver. See Lug, Barrel.

Chunks of charcoal made by carbonizing wtree branches and sticks so the charcoal actually still looks like black bits of tree. Read more in my article about charcoal.

Any kind of mass in the breast or elsewhere in the body. 

offa

If you don’t like it, you may lump it. Whether you like to do it or not, no matter; it must be done. Here “lump it” means “to gulp it down,” or swallow unw [..]

can be a growth or fluid filled cyst or any structure rising above the normal surface of a tissue plane Malignant tumor

Food received at the back door; a handout.

, (1) sb. anything big. ‘A lump of a girl.’ (2) sb. a quantity. ‘A lump of people.’

An iron ore product that is normally sized between 6 mm and 30 mm and can be charged into the blast furnace without prior agglomeration, thereby commanding a price premium.

cad mean, ignoble, or dirty male person