pennyroyal /pen-i-roiˈəl/

1. A species of mint (Mentha pulegium) once valued in medicine
2. A related plant, Hedeoma pulegioides (US)

• wormed
• wormer
• yellow bile
• yellowbird
• yellowbirds
• yellow-boy
• yellow-boys
• yellow brick road
• yellow brick roads
• yellow bunting
• yellow buntings
• yellowcake
• yellowcakes
• yellow card
• yellow cards
• yellow centaury
• yellow dog
• yellow-dog contract
• yellow dogs
• yellow earth
• yellow earths
• yellowed
• yellower
• yellowest
• yellow-eyed grass