Ken appeared on the English horizon in the 16th century referring to the distance bounding the range of ordinary vision at sea (about 20 miles), and would thus have been familiar to skippers in particular. …

KEN definition: knowledge, understanding, or cognizance; mental perception. See examples of ken used in a sentence.

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KEN definition: 1. not in your area of knowledge: 2. to know someone or something 3. not in your area of…. Learn more.

Ken in American English (ken) noun a male given name, form of Kendall or Kenneth

1. knowledge or understanding: an idea beyond one's ken. 2. range of sight or vision.

Dec 13, 2025 · In common usage a fossil word, found only in phrases such as beyond one’s ken and swim into one’s ken.