IPA: /ˈbriːfkeɪs/
KK: /ˈbrifˌkeɪs/
A portable case with a handle, used to carry documents, papers, or books.
He carried his laptop and important documents in his briefcase.
Briefcase → The word is formed from "brief" (from Latin "brevis", meaning short) and "case" (from Old French "cas", meaning a container or box). A briefcase is a container designed to hold short documents or items, typically used for carrying papers.
Think of 'short' ('brief') documents being held in a 'container' ('case') — that's what a briefcase is for.