knownoʊ(v.; n.)knew, known, know•ing

1. (v.t.)to perceive or understand as fact or truth; apprehend clearly and with certainty.

2. to have fixed in the mind or memory:

   to know a poem by heart.

3. to be cognizant of:

   I know it.

4. to be acquainted or familiar with (a thing, place, person, etc.): I know the mayor well.

5. to understand from experience or practice:

   to know how to make gingerbread.

6. to be able to distinguish, as one from another:

   to know right from wrong.

7. to recognize:

   I'd know her if I saw her again.

8. Archaic. to have sexual intercourse with.

9. (v.i.)to have knowledge or clear and certain perception, as of fact or truth.

10. to be cognizant or aware, as of some circumstance or occurrence; have information.

11. (n.)the fact or state of knowing; knowledge.

Idioms for know:

1. in the know,privy to information.

   Category: Idiom

Origin of know:

bef. 900; ME knowen, knawen, OE gecnāwan; c. OHG -cnāhan, ON knā to know how, be able to; akin to L(g)nōscere, Gk gignṓskein. See gnostic , can1

know′er(n.)