Noah Webster
Ken
KEN, verb transitive [Latin canus, white, caneo, to be white, and this with Latin cano, to sing, canto, Eng. to cant, to chant; Latin gigno.]
1. To see at a distance; to descry.
We ken them from afar.
2. To know; to understand. [This verb is used chiefly in poetry.]
KEN, verb intransitive To look round.
KEN, noun View; reach of sight.
Coasting they kept the land within their ken