Webster's Revised Unabridged Dictionary · 1913

Ken

Ken (ken) , noun

[Perh. from kennel.]

A house; esp., one which is a resort for thieves. [Slang, English]

Ken (kend) , transitive verb

[Old English kennen to teach, make known, know, Anglo-Saxon cennan to make known, proclaim, or rather from the related Icelandic kenna to know; akin to Dutch & German kennen to know, Gothic kannjan to make known; orig., a causative corresponding to Anglo-Saxon cunnan to know, Gothic kunnan. r45. See Can to be able, Know.]

1.
To know; to understand; to take cognizance of. [Archaic or Scottish]
2.
To recognize; to descry; to discern. [Archaic or Scottish]
We ken them from afar. — Addison
'T is he. I ken the manner of his gait. — Shakespeare

Ken , intransitive verb

To look around. [Obsolete] — Burton

Ken , noun

Cognizance; view; especially, reach of sight or knowledge.
Beyond his ken. — Longfellow
Above the reach and ken of a mortal apprehension. — South
It was relief to quit the ken And the inquiring looks of men. — Trench