'administrator' definitions:

Definition of 'administrator'

(from WordNet)
noun
Someone who administers a business [syn: administrator, decision maker]
noun
The party appointed by a probate court to distribute the estate of someone who dies without a will or without naming an executor
noun
Someone who manages a government agency or department [syn: administrator, executive]

Synonyms of 'administrator'

From: Moby Thesaurus