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.
âExpungementâ is a term used when referring to a process of cleaning up your criminal. record. In this process you request that the court reopen your criminal case, withdraw. the plea or guilty verdict, dismiss the charges, and re-close the case without a. conviction. In effect, you are no longer a convicted person.