sheep·herd·er 
(shēphûr′dər)
(shēphûr′dər)n.
A person who herds sheep, especially on an open range; a shepherd.
sheepherd′ing n.
- aerological
- aerologist
- aerology
- aeromagnetic
- aeromagnetically
- aeromagnetics
- aeromechanical
- aeromechanically
- aeromechanics
- aeromedical
- aeromedicine
- aerometer
- aeronaut
- aeronautic
- aeronautical
- aeronautically
- aeronautics
- aeronomer
- aeronomic
- aeronomical
- aeronomist
- aeronomy
- aeropause
- aerophagia
- aerophobia