1. An undertaking that is dangerous, daring, or of uncertain outcome.

2. A business enterprise involving some risk in expectation of gain.

3. Something, such as money or cargo, at hazard in a risky enterprise.

1. To expose to danger or risk: ventured her entire fortune on a single stock.

2. To brave the dangers of: ventured the high seas in a small boat.

3. To express at the risk of denial, criticism, or censure: "I would venture to guess that Anon., who wrote so many poems without signing them, was often a woman" (Virginia Woolf).