Definition of illegal sometimes disparaging + offensive : a person who enters or lives in a country without the documentation required for legal entry or residence
aerial noun [C]. âº a âstructure made of âmetal ârods or âwires that âreceives or âsends out âradio or âtelevision âsignals.
In a typical MATV system: 1  The aerial is a conventional UHF TV aerial, receiving both analogue and digital TV signals. 2  Signals received by the aerial are then processed. 3  A distribution network then delivers all television signals to a socket outlet in each household.