Meaning

noun a compact mass

noun an abnormal protuberance or localized enlargement

noun an awkward stupid person

originFrom Middle English lumpe, from a Germanic base akin to Proto-Germanic *limpaną (“to glide, go, hang loosely”). Compare Dutch lomp (“rag”), German Low German Lump (“rag”), German Lumpen (“rag”) and Lump (“ragamuffin”).

Etymology from Wiktionary, CC BY-SA 3.0