Hypertext Webster Gateway: "reddening"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Redden \Red"den\ (r?d"d'n), v. t. [imp. & p. p. {Reddened}
(-d'nd); p. pr. & vb. n. {Reddening}.] [From {Red}, a.]
To make red or somewhat red; to give a red color to.
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