Probably of foreign origin; some kind of nut-tree, perhaps the almond -- hazel.
Englishman's Concordance
1) almond tree, almond wood Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: probably of foreign origin Same Word by TWOT Number: 1090b
Brown-Driver-Briggs
I. לוּזnoun [masculine]almond-tree, almond-wood (Late Hebrew id.; Aramaic לוּזָא, almond (LöwNo. 319), whence Arabic as loan-word (Frä145 LagBN 157 f.), Ethiopic ); — Genesis 30:37 (J; + לִבְנֶה, עַרְמוֺן לַח) of rods stripped by Jacob.
Englishman's Concordance (References)
Strong's Hebrew: 3869. לוּז (luz) — 1 Occurrence
Genesis 30:37 HEB:לִבְנֶ֛ה לַ֖ח וְל֣וּז וְעֶרְמ֑וֹן וַיְפַצֵּ֤ל NAS: of poplar and almond and plane trees, KJV: poplar, and of the hazel and chesnut tree; INT: of poplar fresh and almond and plane and peeled