from
Easton's 1897 Bible Dictionary
Oil-tree
(Isa. 41:19; R.V. marg., "oleaster"), Heb. 'etz shemen, rendered
"olive tree" in 1 Kings 6:23, 31, 32, 33 (R.V., "olive wood")
and "pine branches" in Neh. 8:15 (R.V., "branches of wild
olive"), was some tree distinct from the olive. It was probably
the oleaster (Eleagnus angustifolius), which grows abundantly in
almost all parts of Palestine, especially about Hebron and
Samaria. "It has a fine hard wood," says Tristram, "and yields
an inferior oil, but it has no relationship to the olive, which,
however, it resembles in general appearance."