briefcase

UK: /ˈbriːfkeɪs/ US: /ˈbrifˌkeɪs/ ,(brēf′kās′)

WordReference Random House Learner's Dictionary of American English © 2025

brief•case /ˈbrifˌkeɪs/   n. [countable]

1. a flat case with a handle, often of leather, for carrying books, papers, etc.

WordReference Random House Unabridged Dictionary of American English © 2025

brief•case  (brēf′kās′), n. 

1. a flat, rectangular case with a handle, often of leather, for carrying books, papers, etc.

• brief (noun, nominal) + case² 1925–30

Collins Concise English Dictionary © HarperCollins Publishers::

briefcase / ˈbriːfˌkeɪs/ noun

1. a flat portable case, often of leather, for carrying papers, books, etc