Medicine. Originally: abnormally great appetite for or consumption of food, sometimes accompanied by other symptoms such as vomiting or fainting…

= dog appetite n. at compounds 3a; also figurative; cf. dog hunger n. at compounds 3a.

Greedy, voracious, ravenous; = canine, adj. 1b. Esp. in dogged appetite, †dogged hunger. Also in figurative contexts. Now rare.

= dog appetite n.; also figurative; cf. dog's hunger n. at compounds 3d.

of appetite, hunger, etc.: Voracious, greedy, as that of a dog. canine appetite, canine hunger: the disease bulimia, n. canine madness: hydrophobia.

voracious or morbidly excessive appetite; an instance of this; cf. canine, adj. 1b, dogged, adj. 2b.

a ravenous or insatiable appetite; = dog appetite n. at dog, n.1 compounds 3a.

abnormal craving for food.

Medicine and Veterinary Medicine. Excessive eating or appetite, esp. as a sign or symptom of disease; hyperphagia.

Voracious or insatiable appetite (for food or certain foods).

Medicine. = polyphagia, n. 1. rare.

an abnormally great desire for food; excessive eating.