"Dawn" is a popular response to this crossword question. Its first letter is D and its last letter is N.
Dawn.
Dawn.
dawn
d for dawn
To dawn.
dawn
dawn
A four letter word meaning to grow light as the sun rises is dawn.
Dawn is the four letter word meaning to grow light as the sun rises. Dawn is the beginning of a new day.
dawn
dawn
d for dawn
d for dawn
Dawn.
dawn
dawn
d for dawn
Going up.
Dawn.