a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"
(American football) a play in which a defensive player is allowed to cross the line of scrimmage and then blocked off as the runner goes through the place the lineman vacated
(electronics) electronic device that amplifies a signal before transmitting it again; "repeaters can be used in computer networks to extend cabling distances"
a person who repeats; "the audience consisted largely of repeaters who had seen the movie many times"
declared not guilty of a specific offense or crime; legally blameless; "he stands acquitted on all charges"; "the jury found him not guilty by reason of insanity"