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

• light-o'-love
• light-o'-loves
• light opera
• light-organ
• light-organs
• light out
• light pen
• light pens
• light pollution
• light-proof
• light railway
• light railways
• lights
• lightship
• lightships
• light show
• light shows
• lightsome
• lightsomely
• lightsomeness
• lightsomenesses
• lights out
• light-spirited
• measliness
• measlinesses