Rasp palm
| (Bot.) | a Brazilian palm tree (Iriartea exorhiza) which has strong aërial roots like a screw pine. The roots have a hard, rough surface, and are used by the natives for graters and rasps, whence the common name. |
See also: Rasp
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.