dwine
To wither, decline, pine away.
Without visible mark or sign she was elf-shot; and the proof of this appeared from her going off her milk, dwining away, and dying before her calves could be counted on the hooves of one foot.
Where it comes from
From Middle English dwynen, from Old English dwīnan, from Proto-West Germanic *dwīnan, from Proto-Germanic *dwīnaną, from Proto-Indo-European *dʰwey- (“to slip away, dwindle, die”), from *dʰew- (“to pass away, die”). Compare West Frisian ferdwine, Dutch dwijnen, verdwijnen, Low German dwienen, verdwienen, Icelandic dvína. See also English dwindle, dush.
Adapted from the Wiktionary entry dwine (CC BY-SA 4.0).