n. The act or state of speculating, or of seeing or looking; intelligent contemplation or observation; a viewing; inspection.n. The pursuit of truth by means of thinking, especially mathematical reasoning and logical analysis; meditation; deep and thorough consideration of a theoretical question.n. In philosophy, sometimes, a purely a priori method of philosophizing: but commonly in philosophy the word has the meaning 2, above.n. The investing of money at a risk of loss on the chance of unusual gain; specifically, buying and selling, not in the ordinary course of commerce for the continuous marketing of commodities, but to hold in the expectation of selling at a profit upon a change in values or market rates.n. A game at cards, the leading principle of which is the purchase of an unknown card on the calculation of its probable value, or of a known card on the chance of no better appearing during the game, a part of the pack not being dealt.