crustaceous; hardback
firm; forcedly; forcibly; good; hard; rigidity; stiff; strong; tough
【医】 pachy-; scirrho-
hull; husk; leather; naughty; peel; skin; surface; tegument
【医】 commune integumentum; Cort.; cortex; cortices; cutis; derm; derma-
dermat-; dermato-; dermo; integument; integumentum; skin