indumentum /in-dū-menˈtəm/ (biology)

1. A total covering of hair, feathers, etc
2. The underside of rhododendron leaves

• crumb
• crumb-brush
• crumb-brushes
• crumbcloth
• crumbcloths
• crumbed
• crumbier
• crumbiest
• crumbing
• crumble
• crumbled
• crumbles
• crumblier
• crumblies
• crumbliest
• crumbliness
• crumbling
• crumbly
• crumbs
• crumb-tray
• crumb-trays
• crumby
• crumen
• crumenal
• crumenals