(1):

(n.) Notice given in words or writing, or by signs.

(2):

(n.) The act of notifying, or giving notice; the act of making known; especially, the act of giving official notice or information to the public or to individuals, corporations, companies, or societies, by words, by writing, or by other means.

(3):

(n.) The writing which communicates information; an advertisement, or citation, etc.