'Pipes' in the Bible

and he saith unto me, 'What art thou seeing?' And I say, 'I have looked, and lo, a candlestick of gold -- all of it, and its bowl is on its top, and its seven lamps are upon it, and twice seven pipes are to the lights that are on its top,

And I answer a second time, and say unto him, 'What are the two branches of the olive trees that, by means of the two golden pipes, are emptying out of themselves the oil?'