noun
incarnation of selfishness; lump of avarice
A strong, often derogatory expression for a person who seems to be nothing but greed or selfish desire. Used to criticize someone's character as being entirely driven by personal gain.
彼は欲の塊のような人間だ。
He is a person who is the very incarnation of greed.
あの政治家は欲の塊で、国民のことなど考えていない。
That politician is a lump of avarice and doesn't think about the people at all.
Compound of 欲 (よく, 'desire, greed') + の (possessive particle) + 塊/固まり (かたまり, 'lump, mass'). Literally 'a lump of greed', used metaphorically to describe a person consumed by selfish desires.