saw palmetto

noun

1. a shrublike palmetto, Serenoa repens, of the palm family, native to the southern U.S., having green or blue leafstalks set with spiny teeth.
2. a tall palm, Acoelorraphe wrightii, of Florida and the West Indies.

noun

1. any of several dwarf prickly palms, esp any of the genus Sabal, of the southeastern US