Meaning

• The dripping of rain from the eaves of a house

• The space around a house on which such water drips

• A concealed aperture through which an occupant of a building can surreptitiously listen to people talking at an entrance to the building

• The act of intentionally hearing a conversation not intended to be heard

Meaning

• To hear a conversation one is not intended to hear; to listen in.

  "I hope nobody was eavesdropping on our conversation last night, since it got so personal."

• To listen for another organism's calls, so as to exploit them.