(informal) A characteristic odor caused by the combination of chemicals and materials in a new automobile. / (figuratively) A perception of freshness or novelty.

(somewhat rare) A number theorist.

plural of number theoretician

(idiomatic) The latest developments in a particular situation or a person's life.

(informal) An informal greeting asking the other person what has recently happened in their life. A typical response might be "Not much; you?". The greeting is not always literal and may just be used to say hello.

plural of nose job

plural of non partant

To spend a night at someone else's home.

(computing) A notation where each control character is represented by a caret followed by a letter or symbol.

(idiomatic) Alternative form of albatross around one's neck