A farewell said in the evening or before going to sleep. / (colloquial, dated) Expressing incredulity.

Not posing a threat.

(cricket) The state of a player who did not bat in an innings played by his side. Abbreviated DNB.

A state of the United States.

(quantum mechanics) One of certain integers or half-integers that specify the state of a quantum mechanical system (such as an electron in an atom).

A former provincial kingdom in New Spain. / A former territory of Mexico. / A former transitional government in the United States. / A former territory of the United States.

A number written in the form a × bᶜ, e.g. 3.75 × 10³ (a being the mantissa, b, the base and c, the exponent).

A mandatory unique alphanumeric code (usually 17 characters long) assigned to each vehicle produced, stamped into the metal on the dashboard on the left-hand side (viewable through the windshield), and on the engine block and at least one other place somewhere on the body of the vehicle.

(physics, chemistry) The total number of protons and neutrons in an atomic nucleus. Symbol: A

(uncountable) The theory, practice and technology of charting a course for a ship, aircraft or spaceship or (colloquially) road vehicle.