From bachar; select, i.e. Best -- choice(-st), chosen.
see HEBREW bachar
H4005. mibchar
[מִבְחָר] noun [masculine] (feminine Ezekiel 24:5) choicest, best, construct מִבְחַר Deuteronomy 12:11 10t.; suffix מִבְחָרָיו Daniel 11:15; vows Deuteronomy 12:11; valleys Isaiah 22:7; fir trees 37:24; cedars Jeremiah 22:7; bones Ezekiel 24:4; sepulchres Genesis 23:6 (P); of the flock Ezekiel 24:5; of the Assyrians 23:7; captains Exodus 15:4 (E poetry); young men Jeremiah 48:15; לבנון וטוב מבחר Ezekiel 31:16 (strike out ᵐ5 וטוב Co); מִבְחָרָיו עַם Daniel 11:15 = his choice troops.