ʻā.nau.nau
1. Same as naunau 3, shellfish.
2. n. A small shrubby mustard, called peppergrass (probably a native species, Lepidium bidentatum var. o-waihiense); the root was used medicinally. (Neal 370) Also kūnānā, naunau.
3. n. According to Rock (1913) a large native peppergrass (Lepidium serra), with narrower leaves, found only on Kauaʻi.