Longman Dictionary of Contemporary English - appetite

~ n 1 a desire for food  (a healthy appetite | lose your appetite)  (She has completely lost her appetite since the operation. | have a huge/big/voracious appetite (=have the ability to eat a lot of food) | spoil/ruin your appetite (=eat before a meal and then not want to eat at the meal))  (Don't eat that cake now, you'll spoil your appetite. | give sb an appetite (=make them want to eat))  (All that walking has given me a big appetite.) 2 a desire or liking for a particular activity + for  (Paul has no appetite for hard work.) sexual appetite  (an insatiable sexual appetite)  (- see also whet sb's appetite whet (1))