Any indication similar in nature to nota bene. / Something deserving of close attention or of careful notice.

(Of a company or organization) providing goods or services but not for the purpose of making a profit.

A not-for-profit company or organization.

(cricket, of a batsman at the end of an innings) not dismissed and having not retired. / Used other than figuratively or idiomatically: see not, out.

(emphatic) Not in the least.

(idiomatic) Used similarly to you're welcome, as a conventional reply to an expression of gratitude. / (idiomatic) Don't worry about it (response to worry or an apology)

plural of notum

(idiomatic) Unlikely to endure for much more time.

(idiomatic) Absolutely not; no way.

(idiomatic) Absolutely not; under no circumstances.