IPA: /ˈstɔːrˌruːm/
KK: /ˈstɔːrˌruːm/
A room where items or supplies are kept and stored.
We keep all the extra furniture in the storeroom.
Storeroom → It is formed from "store" (from Old English *storian*, meaning to store or keep) and "room" (from Old English *rum*, meaning space or area). A storeroom is a space designated for storing items.
Think of a place where you 'keep' things ('store') in a designated 'space' ('room'). This helps you remember that a storeroom is a space for keeping items.