(1)主要事实
指原告主张权利所直接依赖的案件事实，区别于据以推断主要事实存在的「证据性事实」〔evidentiary fact〕。
(→ultimate facts)

(2)(=fact in issue)

• back order
• back pay
• backpay award
• back pay orders
• backside
• backspread
• back taxes
• back-title letter
• back-to-back escrow
• back to work agreement
• back-tracking
• back-up offer
• backwardation
• backwards
• Bacon-Davis Act
• baculus
• baculus nuntiatorius
• bad-boy disqualification
• bad-boy provision
• bad character
• bad check
• bad conduct discharge
• bad debt
• bad debt loss ratio
• bad debtor