1. Taken in advance to protect against possible danger or failure
   - precautionary

See also: preventative, preventive

• birdhouse
• birdie
• birdlike
• birdlime
• birdnest
• birdnesting
• birdseed
• birdseed grass
• birdsong
• birdwatch
• birefringence
• birefringent
• bireme
• biretta
• biriani
• birken
• birl
• birle
• birling
• Birmingham
• Biro
• birr
• birretta
• birth
• birth canal