The Collaborative International Dictionary of English v.0.48:
Know \Know\ (n[=o]), v. t. [imp. Knew (n[=u]); p. p. Known
(n[=o]n); p. pr. & vb. n. Knowing.] [OE. knowen, knawen,
AS. cn[aum]wan; akin to OHG. chn[aum]an (in comp.), Icel.
kn[aum] to be able, Russ. znate to know, L. gnoscere,
noscere, Gr. gighw`skein, Skr. jn[=a]; fr. the root of E.
can, v. i., ken. [root]45. See Ken, Can to be able, and
cf. Acquaint, Cognition, Gnome, Ignore, Noble,
1. To perceive or apprehend clearly and certainly; to
understand; to have full information of; as, to know one's
O, that a man might know
The end of this day's business ere it come! --Shak.
There is a certainty in the proposition, and we know
Know how sublime a thing it is
To suffer and be strong. --Longfellow.
2. To be convinced of the truth of; to be fully assured of;
as, to know things from information.
3. To be acquainted with; to be no stranger to; to be more or
less familiar with the person, character, etc., of; to
possess experience of; as, to know an author; to know the
rules of an organization.
He hath made him to be sin for us, who knew no sin.
--2 Cor. v.
Not to know me argues yourselves unknown. --Milton.
4. To recognize; to distinguish; to discern the character of;
as, to know a person's face or figure.
Ye shall know them by their fruits. --Matt. vil.
And their eyes were opened, and they knew him.
Faithful friend from flattering foe. --Shak.
At nearer view he thought he knew the dead.
5. To have sexual intercourse with.
And Adam knew Eve his wife. --Gen. iv. 1.
Note: Know is often followed by an objective and an
infinitive (with or without to) or a participle, a
dependent sentence, etc.
And I knew that thou hearest me always. --John
The monk he instantly knew to be the prior. --Sir
In other hands I have known money do good.
To know how, to understand the manner, way, or means; to
have requisite information, intelligence, or sagacity. How
is sometimes omitted. " If we fear to die, or know not to
be patient." --Jer. Taylor.