definition of
redden

[1] #1 redden v. [blush, crimson, flush] turn red, as if in embarrassment or shame; "The girl blushed when a young man whistled as she walked by". wn

[2] #2 redden v. make red; "The setting sun reddened the sky". wn

[3] #3 redden v. turn red or redder; "The sky reddened". wn