tonka-bean /tongˈkə-bēnˈ/

1. (also tonga-bean /tongˈgə-/, tonquin-bean /tongˈkēn-/) the coumarin-scented seed of a large papilionaceous tree (genus Dipteryx) of Guiana, used for flavouring snuff, etc
2. The tree from which it comes

• oligopoly
• oligopsonies
• oligopsonistic
• oligopsony
• oligosaccharide
• oligospermia
• oligotrophic
• oligotrophy
• oliguria
• oligurias
• oliguric
• olingo
• olingos
• olinguito
• olinguitos
• olio
• olios
• oliphant
• oliphants
• olitories
• olitory
• olivaceous
• olivary
• olivary bodies
• olive