Briefcase

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wiktionary

ref 

brief +‎  case


etymonline

ref

briefcase (n.)

also brief-case, "portable folding case for holding papers," 1908, from brief (n.) in the paper sense + case (n.2). Earlier was brief-bag (1806).

取自“https://www.bigphysics.org/index.php?title=Briefcase&oldid=23921”