Having rugae or wrinkles, creases, ridges, or corrugation.
2
Rugged, rough, unrefined.
3
Having a rough, wrinkled, or wavy surface; commonly in parasynthetic usage e.g. rugose-veined or rugose-leaved.
4
Describing a fossil coral of the extinct order β Rugosa (also called Tetracoralla), this order has horn-shaped corals with surfaces covered with ridges.