apple

(idiomatic) A person or thing cherished above all others.

"His youngest daughter is truly the apple of his eye."

A round, firm fruit with crisp flesh and edible skin.

"She enjoyed a crisp green apple for her snack."

(idiomatic) A person whose bad behaviour negatively influences a group.

"One bad apple can spoil the whole barrel."

The deciduous tree that bears apples.

"The old apple tree produced abundant fruit this year."