The Proto-Celtic word *gel-tā
Word *gel-tā
Meaning grass

Other words that might be of interest
*kʷranno ‘tree’, *beljā ‘leaf, tree’, *rīto(s) ‘seed’, *satā ‘seed’, *seg-os ‘seed’, *sīlo ‘seed’, *dal-injo ‘leaf’, *dulā ‘leaf’, *budno- ‘root’, *wradjo ‘root’, *torjVnā ‘wheat’, *blāto ‘flower’