high finance: large and complex financial transactions (often used with the implication that those individuals or institutions who engage in them are unethical)
commercial enterprise: the activity of providing goods and services involving financial and commercial and industrial aspects
strophanthin: a bitter and very toxic glycoside derived from plants of the genus Strophanthus; in moderate doses it is a cardiac stimulant but in larger doses it is a powerful poison; used in Africa as an arrow poison