A round fruit with red, green, or yellow skin and firm white flesh. Apples grow on trees and are one of the most popular fruits in the world.

Countable noun. Plural: apples. Use 'an apple' (not 'a apple') — always use 'an' before vowel sounds. Common collocations: apple juice, apple pie, apple tree, apple cider. You can say 'I eat an apple' (one) or 'I eat apples' (in general).

'An apple a day keeps the doctor away' is a famous English saying meaning that eating healthy food prevents illness. Apples are one of the most popular fruits in English-speaking countries and appear in many idioms and fairy tales (e.g. Snow White).