also: けいちゅう
noun
spliced pole; joined pole
A pole made by joining two or more shorter pieces end-to-end, used in construction or for utility poles.
電柱には継ぎ柱が使われることがある。
Spliced poles are sometimes used for utility poles.
古い建物の補強に継ぎ柱を入れた。
They inserted spliced poles to reinforce the old building.
Compound of 継ぎ (tsugi, 'splicing, joining') and 柱 (hashira, 'pillar, pole'). The on-reading けいちゅう is a Sino-Japanese reading of the same kanji.