A piece of furniture or a place for storing things, with a door or doors and typically with shelves.
We keep the hoover and mop in a cupboard under the stairs.
She organized the dishes neatly in the cupboard.
The cleaning supplies were stored in the cupboard under the sink.
The old cupboard in the kitchen had a charming vintage design.
He opened the cupboard to find his favorite snack hidden on the top shelf.