Dug (dŭg), n. [Akin to Sw. dägga to suckle (a child), Dan. dægge, and prob. to Goth. daddjan. √66.] A teat, pap, or nipple; — formerly that of a human mother, now that of a cow or other beast.
With mother's dug between its lips. Shak.
Webster's Dictionary 1913
Dug (dŭg), n. [Akin to Sw. dägga to suckle (a child), Dan. dægge, and prob. to Goth. daddjan. √66.] A teat, pap, or nipple; — formerly that of a human mother, now that of a cow or other beast.
With mother's dug between its lips. Shak.