Definition of saw palmetto
1
: any of several shrubby palms chiefly of the southern U.S. and West Indies that have spiny-toothed petioles;
especially
: a common palm (Serenoa repens) of the southeastern U.S. with a usually creeping stem
2
: a preparation derived from the berrylike fruit of a saw palmetto (Serenoa repens) that is held to have a therapeutic effect on the prostate gland and is used in dietary supplements and herbal remedies
