sparestock

2. The extra parts a shop keeps to replace broken items.

The bike shop has spare stock for every model it sells.

3. A supply set aside for emergencies.

The hospital keeps spare stock of masks for busy days.

4. Unused goods kept in a storeroom.

The spare stock in the back room is checked every month.

5. An additional amount kept beyond what is needed now.

They ordered spare stock so the shelves never look empty.