Boyd’s Bible Dictionary:
(fig-mulberry). Not our sycamore or plane-tree, but a tree of the fig species growing in Egypt and Palestine and valued for its fruit and light, soft, durable wood (1 Kings 10:27; 1 Chron. 27:28; Psa. 78:47; Luke 19:4). Sycamine (Luke 17:6). Sycamore fruit grows singly or in clusters and in almost direct contact with the branches. It resembles the fig in shape, and though of acrid taste when first pulled soon becomes sweetish. Egyptian mummery-cases were made of the wood of the sycamore tree.
Concise Bible Dictionary:
Ficus Sycomorus
This is a tree large enough for a man to rest in its branches, as Zacchaeus did (Luke 19:4). It was known in Egypt, and was plentiful in Palestine. Amos was a “gatherer of sycamore fruit.” David had a special overseer of such trees (1 Kings 10:27; 1 Chron. 27:28; Psa. 78:47; Isa. 9:10; Amos 7:14). It is supposed to be the sycamore-fig, or fig-mulberry (Ficus sycomorus). Its wood is very durable. The Egyptian mummy coffins made of it have remained sound after the entombment of thousands of years.
Strong’s Dictionary of Greek Words:
Transliteration:
sukomoraia
Phonic:
soo-kom-o-rah’-yah
Meaning:
from 4810 and μόρον (the mulberry); the "sycamore"-fig tree
KJV Usage:
sycamore tree. Compare 4807