Webster's Revised Unabridged Dictionary · 1913

No

No (nō) , adjective

[Old English no, non, the same word as English none; compare English a, an. See None.]

Not any; not one; none; as, yes, we have no bananas; -- often used as a quantifier.
Let there be no strife... between me and thee. — Gen. xiii. 8
That goodness is no name, and happiness no dream. — Byron

In Old England before a vowel the form non or noon was used. “No man.” “Noon apothercary.”

No , adverb

[Old English no, na, Anglo-Saxon ; ne not + ā ever. Anglo-Saxon ne is akin to Old High German ni, Gothic ni, Russ. ne, Ir., Gael. & Welsh ni, Latin ne, Greek nh (in comp.), Sanskrit na, and also to English prefix un-. r 193. See Aye, and compare Nay, Not, Nice, Nefarious.]

Nay; not; not at all; not in any respect or degree; -- a word expressing negation, denial, or refusal. Before or after another negative, no is emphatic.
We do no otherwise than we are willed. — Shakespeare
I am perplx'd and doubtful whether or no I dare accept this your congratulation. — Coleridge
There is none righteous, no, not one. — Rom. iii. 10
No! Nay, Heaven forbid. — Coleridge

No (nō) , noun

1.
A refusal by use of the word no; a denial.
2.
A negative vote; one who votes in the negative; as, to call for the ayes and noes; the noes have it.

no. , noun

Number; -- the number designating place in an ordered sequence; as, no. 2. [abbrev.]