1. (noun) great spike rush, bamboo spike-sedge, Eleocharis sphacelata - a rush growing to about 1 m which spreads from a creeping rhizome and has thick hollow stems of bright green. Found throughout Aotearoa/New Zealand in swamps and on lake edges and is often partially submerged. The soft, flattened, hollow stalks (culms) of kuta are a popular resource for weavers. The long culms are harvested, placed under matting for about 3 days to flatten, then woven into soft hats, mats, and kete. Kuta dries to an attractive golden-brown shade.