(1)家臣；仆役；地方贵族;塞恩
早期在盎格鲁-撒克逊用语中指贵族、武将等的家臣，后用来指地方贵族，分为王室贵族和下级贵族〔King's thegn and inferior thegn〕，他们可能主要是服军役。诺曼征服之后并入骑士之列。

(2)国王的直属封臣

• bail-point scale
• bailsman
• bail to the action
• bail to the sheriff
• baily
• Baines' Act
• bair-man
• bairn
• bairns' part
• bait
• bait and switch
• baiting animals
• bajardour
• balance
• balance due
• balance of convenience
• balance of international trade
• balance of payments
• balance of power
• balance of terror
• balance of trade
• balance order
• balance sheet
• balance sheet test
• balancing of interests