More properly sycomore (Heb. shikmoth and shikmim, Gr. sycomoros), a tree which in its general character resembles the fig-tree, while its leaves resemble those of the mulberry; hence it is called the fig-mulberry (Ficus sycomorus). At Jericho, Zacchaeus climbed a sycomore-tree to see Jesus as he passed by (Luke 19:4). This tree was easily destroyed by frost (Ps. 78:47), and therefore it is found mostly in the “vale” (1 Kings 10:27; 2 Chr. 1:15: in both passages the R.V. has properly “lowland”), i.e., the “low country,” the shephelah, where the climate is mild. Amos (7:14) refers to its fruit, which is of an inferior character; so also probably Jeremiah (24:2). It is to be distinguished from our sycamore (the Acer pseudo-platanus), which is a species of maple often called a plane-tree.
Sycamore
A short man in Jericho wanted to see Jesus and could not, because of the crowd. So, Luke says, “he ran before, and climbed up into a sycomore tree.” That is the best-known moment for this tree in Scripture. Elsewhere the sycomore appears as a picture of plenty: in the days of Solomon, cedar was as common in Jerusalem “as the sycomore trees that are in the vale.” Both the king’s wealth and one man’s eager climb are told with the same ordinary tree. Start with Luke 19 to meet the climber, then glance at 1 Kings 10 for the comparison.
4 verses
1 Kings
And the king made silver to be in Jerusalem as stones, and cedars made he to be as the sycomore trees that are in the vale, for abundance.
2 Chronicles
And the king made silver and gold at Jerusalem as plenteous as stones, and cedar trees made he as the sycomore trees that are in the vale for abundance.
And the king made silver in Jerusalem as stones, and cedar trees made he as the sycomore trees that are in the low plains in abundance.
Luke
And he ran before, and climbed up into a sycomore tree to see him: for he was to pass that way.
From Easton's Bible Dictionary
Matthew George Easton, 1897