It means “friend of the court”. The person is not a party to the case in any manner. His sole purpose is to assist the court by providing substantial information or insight for the smooth disposal of the case.
Bond is a formal written agreement made amongst the parties to perform a certain act or stop from doing an act.
The word ‘bailor’ means ‘a person who has delivered his goods to another in trust’.
The definition and use of cheques are covered by The Bills of Exchange Act 1882, and the Cheques Acts of 1957 and 1992.