ridgepole (English)
├── pole (English)
│ ├── pole (Middle English (1100-1500))
│ └── pole (Middle French (ca. 1400-1600))
│ └── polus (Latin)
│ └── πόλος (Ancient Greek (to 1453))
└── ridge (English)
└── rigge (Middle English (1100-1500))
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