mast

详细解释:n. 桅, 桅杆, 杆
vt. 装桅杆于
【电】 天线柱

英语解释：

名词 mast:

a vertical spar for supporting sailsnuts of forest trees (as beechnuts and acorns) accumulated on the ground; used especially as food for swinenuts of forest trees used as feed for swineany sturdy upright pole

例句：

My nephew worked his passage to Sydney before the mast.我的侄儿乘船去悉尼时在船上充当普通水手，打工以抵偿旅费。