Real Dictionary

trade wind in American English
a wind that blows steadily toward the equator from the northeast in the tropics north of the equator and from the southeast in the tropics south of the equator
noun: any of the nearly constant easterly winds that dominate most of the tropics and subtropics throughout the world, blowing mainly from the northeast in the Northern Hemisphere, and from the southeast in the Southern Hemisphere

trade wind in British English
noun: a wind blowing obliquely towards the equator either from the northeast in the N hemisphere or the southeast in the S hemisphere, approximately between latitudes 30° N and S, forming part of the planetary wind system