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

• underthirst
• underthirsts
• underthrust
• underthrusts
• undertime
• undertimed
• undertimes
• undertint
• undertints
• undertone
• undertoned
• undertones
• undertook
• under tow
• undertow
• under tow of vessels
• undertows
• undertrick
• under-tunic
• under-tunics
• under-turnkey
• under-turnkeys
• underuse
• underuses
• underutilisation