any venturesome undertaking especially one with an uncertain outcome | a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence) |
a commercial undertaking that risks a loss but promises a profit | continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature |
an investment that is very risky but could yield great profits | a message expressing an opinion based on incomplete evidence |
| an investment that is very risky but could yield great profits |