There are multiple meanings for the term "cob," depending on the context. Here are some of the most common definitions:

• Close of business (COB): This term refers to the end of a business day and the close of the financial markets in New York City, which define U.S. business hours. Its used in business communications to set a deadline for a task to be completed by 5:00 PM Eastern Standard Time (EST). COB can be used interchangeably with end of business (EOB), end of day (EOD), end of play (EOP), and close of play (COP) .

• Coordination of benefits (COB): This term refers to how patients insurance benefits are applied in medical billing. To resolve COB issues, the medical provider needs to determine the primary provider and secondary provider for the patient. COB is important to ensure that any claim is correctly processed.

• Cob (material): This term refers to a natural building material made from subsoil, water, fibrous organic material (typically straw), and sometimes lime. Cob is fireproof, resistant to seismic activity, and uses low-cost materials, although it is very labor-intensive. It can be used to create artistic and sculptural forms, and its use has been revived in recent years by the natural building and sustainability movements).

• Cob (noun): This term can also refer to a male swan.

• Corn on the cob: This term refers to corn that has been cooked and served on the cob.

Therefore, the meaning of "cob" depends on the context in which it is used.