indumentum /in-dū-menˈtəm/ (biology)

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

• like a cat on a hot tin roof
• like a cat on hot bricks
• like a charm
• like a dog's dinner
• like a dose of salts
• like a dying duck
• like a headless chicken
• like a house on afire
• like a house on fire
• like a lamb to the slaughter
• like anything
• like a shot
• like a streak
• like a tansy
• like a ton of bricks
• like banging one's head against a brick wall
• like billy-o
• like billy-oh
• like blazes
• like buggery
• like clockwork
• like crazy
• liked
• like death warmed over
• like death warmed up