1. In negotiations for a policy of insurance. In England, the agreement is in practice concluded between the parties by a memorandum called the “slip,” containing the terms of the proposed insurance, and initialed by the underwriters. Sweet. 2. Also that part of a police court which is divided off from the other parts of the court, for the prisoner to stand in. It is frequently called the “dock.” Brown. 3. The intermediate space between two wharves or docks; the opening or vacant space between two piers. See Thompson v. New York, 11 N. Y. 120; New York v. Scott, 1 Caines (N. Y.) 543.