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

• I'll thank you to
• illths
• ill-timed
• ill-treat
• ill-treated
• ill-treating
• ill-treatment
• ill-treats
• I'll trouble you to
• ill turn
• ill turns
• illude
• illuded
• illudes
• illuding
• illume
• illumed
• illumes
• illuminable
• keyhole saw
• keyhole saws
• keyhole surgery
• key in
• key industries
• key industry