ETYM Old Eng. no, non, the same word as Eng. none; cf. Eng. a, an. Related to None.
(Homonym: know).
Quantifier; used with either mass nouns or plural count nouns for indicating a complete or almost complete lack or zero quantity of.

Nobelium

Or no. Abbreviation for number.
1 north; northern
2 [Latin numero, ablative of numerus] number

Abbreviation for not out (cricket).

Norway

ETYM Old Eng. no, na, as. nâ.
1. Not in any degree or manner; not at all.
2. Referring to the degree to which a certain quality is present; SYN. no more.
3. Used to express refusal or denial or disagreement etc or especially to emphasize a negative statement.

1. An act or instance of refusing or denying by the use of the word no; denial
2. A negative vote or decision b plural; persons voting in the negative

Or Noh; Classical, aristocratic Japanese drama which developed from the 14th to the 16th centuries and is still performed. There is a repertory of some 250 pieces, of which five, one from each of the several classes devoted to different subjects, may be put on in a performance lasting a whole day. Dance, mime, music, and chanting develop the mythical or historical themes. All the actors are men, some of whom wear masks and elaborate costumes; scenery is limited. No influenced kabuki drama.
No developed from popular rural entertainments and religious performances staged at shrines and temples by traveling companies. The leader of one of these troupes, Kan'ami (1333–1384), and his son and successor Zeami wrote a number of No plays and are regarded as the founders of the form. The plots often feature a ghost or demon seeking rest or revenge, but the esthetics are those of Zen Buddhism. Symbolism and suggestion take precedence over action, and the slow, stylized dance is the strongest element. Flute, drums, and chorus supply the music.