Strong's #8410: tidhar (pronounced tid-hawr')
apparently from 1725; enduring; a species of hard-wood or lasting tree (perhaps oak):--pine (tree).
Brown-Driver-Briggs Hebrew Lexicon:
ּ
tidhâr
1) a species of hardwood tree
1a) perhaps boxwood, elm
Part of Speech: noun masculine
Relation: apparently from H1725
Usage:
This word is used 2 times:
Isaiah 41:19: "I will set in the desert the fir tree, and the pine, and the box tree together:"
Isaiah 60:13: "shall come unto thee, the fir tree, the pine tree, and the box together, to beautify the place"