WordNet sense 1 (low-growing fan-leaved palm of coastal southern United States having edible leaf buds):

cabbage palmetto, Sabal palmetto

WordNet sense 2 (West Indian palm with leaf buds that are edible when young):

Roystonea oleracea

WordNet sense 3 (Australian palm with leaf buds that are edible when young):

cabbage tree, Livistona australis

WordNet sense 4 (Brazilian palm of genus Euterpe whose leaf buds are eaten like cabbage when young):

Euterpe oleracea