Calliope /kə-līˈə-pi or kaˈli-ōp/

1. The Muse of epic poetry (Gr myth)
2. (without cap) a keyboard musical instrument similar to an organ, with a set of whistles operated by steam or compressed air

• spiral
• spiral arm
• spiral arms
• spiral binding
• spiral bound
• spiraled
• spiral fracture
• spiral fractures
• spiral galaxies
• spiral galaxy
• spiraliform
• spiralism
• spiralisms
• spiralist
• spiralists
• spiralities
• spirality
• spiralled
• spiralling
• spirally
• spiral ratchet screwdriver
• spiral ratchet screwdrivers
• spirals
• spiral staircase
• spiral staircases