early 14c., lumpe (1224 as surname), probably in Old English, perhaps from a Scandinavian source (cf. cognate Danish lumpe, 16c.), of unknown origin. Cf. also Middle High German lumpe, early modern Dutch lompe. Phrase lump in (one's) throat "feeling of tightness brought on by emotion" is from 1803. Lumps "hard knocks, a beating" is colloquial, from 1934. Lump sum, one covering a number of items, is from 1867.