silphium /silˈfi-əm/

1. A plant (perh the umbelliferous Ferula tingitana) imported from Cyrenaica by the Greeks for use as a food and in medicine (historical)
2. (cap) a genus of American composites, compass plants

• phrenitis
• phrenitises
• phrenologic
• phrenological
• phrenologically
• phrenologies
• phrenologise
• phrenologised
• phrenologises
• phrenologising
• phrenologist
• phrenologists
• phrenologize
• phrenologized
• phrenologizes
• phrenologizing
• phrenology
• phrensical
• phrensy
• phrentick
• phrontisteries
• phrontistery
• Phrygian
• Phrygian cap
• Phrygian mode