Telephone Pole
noun
An electricity pillar is a telephone pole. All those wires and telephone wires going to and from those telephone poles.
でんちゅう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
今日車を電柱にぶつけちゃったんだよね。
I ran my car into a telephone pole today.