Definition of tucum
plural -s
1
or less commonly
tucum palm
a
: any of several chiefly Brazilian palms of the genus Astrocaryum (especially A. tucuma) with leaf bases that yield a coarse fiber used especially for cordage and hats and with seeds that yield an edible oil
b
: a low spiny Brazilian palm (Bactris setosa) with leaves that yield a long strong fiber held to resemble wool and used locally for bags or other containers, fishing nets, and shoemakers' twines
2
: the fiber of a tucum
