Lump1  —n. 1 compact shapeless mass. 2 tumour; swelling, bruise. 3 heavy, dull, or ungainly person. 4 (prec. By the) slang casual workers in the building trade. —v. 1 (usu. Foll. By together etc.) Treat as all alike; put together in a lump. 2 (of sauce etc.) Become lumpy.  lump in the throat feeling of pressure there, caused by emotion. [scandinavian]