simoleon /sɪˈmoʊliən/ noun3 •(US, slang) A dollar.That'll cost you five simoleons. •A fake, theoretical, or unofficial unit of currency. •In-game currency of SimCity and The Sims computer game series, or its symbol §.The game franchise demands that its participants to simulate the "rat race," earning Simoleons, remodeling their homes, and buying properties. — 2016 formssimoleons