Antenna

What is Antenna ?

Antenna is (noun) 1. a tube on the head of an insect, used to feel things (NOTE: The plural is antennae .) 2. a person’s ability to know something without being told (NOTE: The plural is antennae .) 3. a piece of equipment for receiving radio or TV signals (NOTE: The plural is antennae . Note that British English also uses aerial.)

 

source: Easier English, Student Dictionary Upper Intermediate Level