Lexical Definition

‎בּוּר‎ bûwr (boor) to explain H:V
a primitive root

declare.

1) (Qal)
1a) to make clear, clear up, explain, prove
1b) (CLBL) to bore into
1c) (TWOT) to declare (?)

Usage: 1 form in 1 verse
Form Translated As     In Verse(s)
וְלָב֣וּר and to make clear Eccl.9.1

Brown-Driver-Briggs

‎בּוּר‎ verb Qal Infinitive construct ‎לָבוּר‎ Eccl 9:1 (with accusative); probably (si vera lectio) make clear, clear up, explain (VB; so sometimes, in Late Hebrew, ‎ברר‎ q. v.) but read perhaps ‎וְלִבִּי רָאָה‎ ᵐ5 ᵑ6 Bi; or ‎לָתוּר‎ Gr, compare Eccl 1:13; Eccl 2:13; Eccl 7:25.

Brown-Driver-Briggs References

Book Refs
Ecclesiastes 1:13 · 2:13 · 7:25 · 9:1