(US, informal) A one-hundred dollar banknote. / (music) The lowest note of an instrument, written below the staff and the D note.

Alternative form of nonflammable

plural of non-maskable interrupt

Either of the small pieces on many eyeglasses that rest on the wearer's nose. / The small leathery part of a cat's nose

(finance) A document saying that someone owes a specific amount of money to someone else, often with the deadline and interest fees; the primary purposes of a promissory note are to evidence the debt obligation incurred, and to establish terms for payment thereof.

(idiomatic) A situation where the permitting of some small act will lead to a larger undesirable act or circumstance.

Things that appear valuable or worthwhile might not actually be so; things that look nice might not be as good as they look.

(UK, informal) The head; the part of the body of an animal or human which contains the brain, mouth and main sense organs. / (UK, informal) The head as the seat of mental capacity or intellect.

(intransitive) To nod repeatedly.

Alternative form of noodle (“improvise musically”).