(1)非法占有他人土地者；(不动产的)非法占有者

(2)拟制诉讼中的假定违约者
在为转让土地所进行的拟制诉讼中被假定为违反契约的那个人。
(→common recovery; fine)

• firsthand knowledge
• first heir
• first impression case
• first in, first out/FIFO
• first in payment of taxes
• First in possession is first in right.
• first in time
• First in time, first in right.
• first inventor
• first lien
• First Lord of the Admiralty
• First Lord of the Treasury
• first meeting
• first meeting of creditors
• first money in, first money out
• first mortgage
• first name
• first occupant
• first of exchange
• first offender
• first open water/FOW
• first option
• first party insurance
• first policy year
• First President