primum mobile /prīˈməm mōˈbi-lē, mobˈi-lē or prēˈmŭm mōˈbi-le/

1. In medieval astronomy, the outermost of the revolving spheres of the universe, carrying the others round in 24 hours
2. Any great source of motion

• raven-duck
• raven-ducks
• ravened
• ravener
• raveners
• ravening
• ravenous
• ravenously
• ravenousness
• ravenousnesses
• ravens
• raven's-bone
• raven's-duck
• raver
• ravers
• raves
• rave-up
• rave-ups
• ravin
• ravin'd
• ravine
• ravined
• ravines
• raving
• ravingly