The act of speculating.

Examination by the eye; view.

Mental view of anything in its various aspects and
relations; contemplation; intellectual examination.

The act or process of reasoning a priori from premises
given or assumed.

Any business venture in involving unusual risks, with
a chance for large profits.

A conclusion to which the mind comes by speculating;
mere theory; view; notion; conjecture.

Power of sight.

A game at cards in which the players buy from one
another trumps or whole hands, upon a chance of getting the highest
trump dealt, which entitles the holder to the pool of stakes.