| NOUN | artifact | rotor head, rotor shaft | the axis around which the major rotor of a helicopter turns |
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| Meaning | The axis around which the major rotor of a helicopter turns. | |
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| Synonym | rotor shaft | |
| Part of | main rotor | rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air |
| Broader | axis, axis of rotation | The center around which something rotates |
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