BNS can refer to several things depending on the context. Here are some possible meanings of BNS based on the search results:

• Bachelor of Naval Science: BNS is an abbreviation for Bachelor of Naval Science, which is a degree program that focuses on the study of naval operations, leadership, and management.

• Boys and shit: In some contexts, BNS can be an acronym for "Boys and shit," which is a phrase used to refer to a close friendship between two or more people.

• Other meanings: BNS can also stand for other things, such as Brand New School, Business and Neighborhood Services, Binary Neutron Stars, and Broadband Network Service, among others.

Its important to note that the meaning of BNS can vary depending on the context, so its always best to consider the specific context in which the term is being used.