- (countable) A crabapple is a kind of apple tree with a small and sour fruit.
- (countable) A crabapple is the fruit that grows on a crabapple tree.
- Don't eat that fruit that you got off of that tree! They are crabapples and are very sour!
- (countable); (informal) A crabapple person who isn't pleasant to be around; crabby.
- That person over there is such a crabapple.