名词栋梁

1. 栋梁：ridgepiece 栋木 | ridgepole 栋梁 | ridgetree 栋木

2. 天遮杆：逆转杠杆reversinglever | 天遮杆ridgepole | 索具rigging

3. 天幕纵梁：ridgeline甲板中线 | ridgepole天幕纵梁 | ridgerope小艇舷侧栏杆顶围绳

4. 房屋的栋木 (名)：ridgeling 隐睾雄畜 (名) | ridgepole 房屋的栋木 (名) | ridgy 有脊的; 有埂的; 隆起的 (形)

noun

1. a beam laid along the edge where two sloping sides of a roof meet at the top
provides an attachment for the upper ends of rafters

Synonym: ridgerooftree