spreader
/ˈspredə(r)/noun
1- a device used for spreading or scattering a substance over a wide area传播机; 撒播器。
1.1
- a person who spreads or disseminates something散布者; 传播者：
they were spreaders of terror.
他们是恐怖的传播者。
1.2
- a plant that grows over a wide area分布很广的植物。
1.3
- a bar attached to the mast of a yacht in order to spread the angle of the upper shrouds纵向撑木。