Definition of hijack for English Language Learners. : 1  to stop and steal (a moving vehicle) : 2  to steal (something) from a moving vehicle that you have stopped. : 3  to take control of (an aircraft) by force.
Dictionary entry overview: What does reconstitute mean? â¢ RECONSTITUTE (verb) The verb RECONSTITUTE has 1 sense: 1. construct or form anew or provide with a new structure Familiarity information: RECONSTITUTE used as a verb is very rare.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  replace(Verb) To restore to a former place, position, condition, or the like. 2  replace(Verb) To refund; to repay; to restore; as, to replace a sum of money borrowed. 3  replace(Verb) To supply or substitute an equivalent for.