Real Dictionary

n.o. in British English
abbreviation for: not out

no
convention: You use no to give a negative response to a question.

No in American English
noun: classic drama of Japan, developed chiefly in the 14th century, employing verse, prose, choral song, and dance in highly conventionalized formal and thematic patterns derived from religious sources and folk myths
the chemical symbol for: nobelium

no in American English 1
not
adjective: not a (used before a noun to convey the opposite of the noun's meaning)
adverb: (a negative used to express dissent, denial, or refusal, as in response to a question or request)
noun: an utterance of the word “no”

no in American English 2
Noh
adjective: not any

no in American English 3
north

no in British English 1
noun: an answer or vote of no
noun: the stylized classic drama of Japan, developed in the 15th century or earlier, using music, dancing, chanting, elaborate costumes, and themes from religious stories or myths
sentence substitute: used to express denial, disagreement, refusal, disapproval, disbelief, or acknowledgment of negative statements

no in British English 2
determiner: not any, not a, or not one
noun

no in British English 3
the chemical symbol for: nobelium
the internet domain name for: Norway

No.
No. is a written abbreviation for number.

no. in American English
abbreviation: north

No. in British English
abbreviation for: north(ern)

no' in British English
adverb: not