1. By custom; according to common practice

See also: customary

• chicken farm
• chicken hawk
• chicken Kiev
• chicken leg
• Chicken Little
• chicken liver
• chicken louse
• chicken manure
• bulldozer
• bullet
• bullet fingerprinting
• bullet hole
• bullet train
• bullet vote
• bullet-headed
• bullethead
• bulletin
• bulletin board
• bulletin board system
• bulletproof
• bulletproof vest
• bullfight
• bullfighter
• bullfighting
• bullfinch