To dawn or begin to appear; to become visible (archaic or poetic).
From Old English 'dagian' or related Germanic roots meaning 'to become day' or 'to dawn.' The form 'daun' represents an archaic or poetic variant of 'dawn,' common in Middle English literature.
The verb 'daun' reveals how 'dawn' is actually a noun derived from the verb form—originally you'd 'daun' and the 'daun' (noun) was what happened, showing how language recycles words between parts of speech.
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