indumentum /in-dū-menˈtəm/ (biology)

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

• lulls
• lulu
• lulus
• lulz
• lum
• luma
• lumas
• lumbaginous
• lumbago
• lumbagos
• lumbang
• lumbang-oil
• lumbangs
• lumbar
• lumbar puncture
• lumbar punctures
• lumber
• lumber-camp
• lumber-camps
• lumbered
• lumberer
• lumberers
• lumbering
• lumberings
• lumberjack