Thayer's Greek Lexicon

 1. to roll off or away

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This word is used in the Gospels to refer to the stone that was in
front of the tomb of Jesus. In Palestine, graves were usually in a
depression and the stone was rolled down an incline to cover the
mouth of the tomb. For a small grave, about twenty men were required
to roll a stone down hill to cover the door of the tomb. The Bible
tells us that the stone covering the door of the tomb was a large
stone. The women would have needed more men than even a full Roman
guard of sixteen men to roll away the stone. This was a major task.