扣減
haircut
莊家能夠據以買入或賣出某隻證券的價格之間的差額，或為計算所需的資本金額、保證金及抵押品水平而對資產市值作出扣減的百分率。
It is capable of making the difference between the price to buy or sell certain securities only between, or to calculate the required amount of capital, collateral and margin levels for the market value of the assets to a deduction percentage.