Acronym of US Navy Board of Inspection and Survey. It is an inspection that occurs on ships and submarines every 5 years and prior to commissioning. Known throughout the Navy for its gruelling inte...

Third-person singular simple present indicative form of big-note

Formed by implosion.

(education, chiefly Canada, US) A grade awarded for a class, better than outright failure (which can be F or E depending on the institution) and worse than a C.