Meaning of Yagi antenna

Ya'gi anten'na

Pronunciation: (yä'gē, yag'ē), [key]
— Radio. Radio.
  1. a sharply directional antenna array, consisting of one or two dipoles connected to the transmitting or receiving circuit, and several insulated dipoles all parallel and about equally spaced in a line.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.