porpoise noun [C]. âº a âmammal that âlives in the âsea, âswims in âgroups, and âlooks âsimilar to a dolphin but has a âshorter ârounder ânose. (Definition of porpoise from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). See all translations.
Definition of point of no return. 1  1 : the point in the flight of an aircraft beyond which the remaining fuel will be insufficient for a return to the starting point with the result that the craft must proceed. 2  2 : a critical point at which turning back or reversal is not possible.
What is 'Cash-On-Cash Return'. Cash-on-cash return is a rate of return often used in real estate transactions that calculates the cash income earned on the cash invested in a property. For example, when an investor purchases a rental property, she might put down only 10% for a cash down payment.