FOLDER
folder
(noun) covering that is folded over to protect the contents
booklet, brochure, folder, leaflet, pamphlet
(noun) a small book usually having a paper cover
Source: WordNet® 3.1
Etymology
Noun
folder (plural folders)
An organizer that papers are kept in, usually with an index tab, to be stored as a single unit in a filing cabinet.
(computing) A virtual container in a computer's file system, in which files and other folders may be stored. The files and subfolders in a folder are usually related.
Synonym: directory
A machine or person that folds things.
A folding knife.
Anagrams
• refold, rolfed
Source: Wiktionary
Fold"er, n.
Definition: One who, or that which, folds; esp., a flat, knifelike
instrument used for folding paper.
Source: Webster’s Unabridged Dictionary 1913 Edition