1. Serving to expound or set forth
   - expository

See also: informative, instructive

• birdsong
• birdwatch
• birefringence
• birefringent
• bireme
• biretta
• biriani
• birken
• birl
• birle
• birling
• Birmingham
• Biro
• birr
• birretta
• birth
• birth canal
• birth certificate
• birth control
• birth control device
• birth control pill
• birth defect
• birth pangs
• birth prevention
• birth trauma