Noun
(military) A position established for the purpose of detecting the enemy's movements by means of listening.
A facility established to monitor radio and microwave signals and analyse their content to secure information and intelligence for use by the security and diplomatic community and others.
Any location frequented by a journalist in search of stories or gossip.
Source: en.wiktionary.orgIt was also used as a listening post, reading German radio messages including Enigma traffic. citation The first air raids against Malta occurred on 11 June 1940; there were six attacks that day. Source: Internet
They also contain air chambers that may function to protect the burrow from flooding and a listening post for predators. Source: Internet