Origin of horse bean
Examples from the Web for horse bean
They were about the size of a horse-bean, and remarkably lively after their aerial but wingless flight.The Romance of Natural History, Second Series|Philip Henry Gosse
I've never seed such splendid large knobs of fat before in the days of my life—they never used to be bigger then a horse-bean.Far from the Madding Crowd|Thomas Hardy
Toker's bean, for instance, is twice-and-a-half as long and broad as the horse-bean, and is much thinner and of a different shape.