EXECUTIVE
executive
(adjective) having the function of carrying out plans or orders etc.; “the executive branch”
executive
(noun) persons who administer the law
administrator, executive
(noun) someone who manages a government agency or department
executive, executive director
(noun) a person responsible for the administration of a business
Source: WordNet® 3.1
Etymology
Adjective
executive (comparative more executive, superlative most executive)
Designed or fitted for execution, or carrying into effect.
Of, pertaining to, or having responsibility for the day-to-day running of an organisation, business, country, etc.
Exclusive.
Noun
executive (plural executives)
A chief officer or administrator, especially one who can make significant decisions on their own authority.
The branch of government that is responsible for enforcing laws and judicial decisions, and for the day-to-day administration of the state.
(computing) A process that coordinates and governs the action of other processes or threads; supervisor.
Source: Wiktionary
Ex*ec"u*tive, a. Etym: [Cf.F. exécutif.]
Definition: Designed or fitted for execution, or carrying into effect; as,
executive talent; qualifying for, concerned with, or pertaining to,
the execution of the laws or the conduct of affairs; as, executive
power or authority; executive duties, officer, department, etc.
Note: In government, executive is distinguished from legislative and
judicial; legislative being applied to the organ or organs of
government which make the laws; judicial, to that which interprets
and applies the laws; executive, to that which carries them into
effect or secures their due performance.
Ex*ec"u*tive, n.
Definition: An impersonal title of the chief magistrate or officer who
administers the government, whether king, president, or governor; the
governing person or body.
Source: Webster’s Unabridged Dictionary 1913 Edition