nu

Etymology 1

From Ancient Greek νῦ (nû), name for the letter of the Greek alphabet Ν (N) and ν (n).

noun

1. The letter of the Greek alphabet Ν (N) and ν (n).
2. A measure of constringence in lenses or prisms.

Etymology 2

Borrowed from Yiddish נו (nu).

intj

1. (Jewish) An exclamation of surprise, emphasis, doubt, etc.
2. (Jewish) Well? (Used as a question to demand an answer from someone reluctant to answer.)

Etymology 3

Phonetic respelling of new.

adj

1. (slang spelling) new