n.
1.a message expressing an opinion based on incomplete evidence
2.a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)
3.an investment that is very risky but could yield great profits
4.continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature
Idiom of the Day
skin-deep
only on the surface, having no deep or honest meaning
Although beauty may be only skin-deep many people care about it very much.