Lexical Definition

‎תִּדְהָר‎ tidhâr (tid-hawr') elm ^H:N-M
apparently from ‎דָּהַר‎

pine (tree).

• enduring
• a species of hard-wood or lasting tree (perhaps oak)

1) a species of hardwood tree
1a) perhaps boxwood, elm

Brown-Driver-Briggs

‎תִּדְהָר‎ noun [masculine] name of a tree, probably elm (Syriac (or PS) Lag^{BN 130} Löw⁷¹; Arabic Lane⁸⁶⁴ Dozy^{i. 432} (also ash, see Dozy^ib.); so Symm & ᵑ9 Isa 41:19 compare Di, where also other views, e.g. plane-tree (Rabb Che), or pine; — √dubious; Ges Isa 41:19 Thes derives from ‎דהר‎ endure inferred from Arabic time, but this questionable; perhaps a loan-word), ‎בְּרוֺשׁ תִּדְהָר וּתְאַשּׁוּר‎ ‎יַחְדָּו‎ Isa 41:19 = Isa 60:13.

Brown-Driver-Briggs References