folder

Meanings

1. 1
   noun

   An organizer that papers are kept in, usually with an index tab, to be stored as a single unit in a filing cabinet.

   I keep all my schoolwork in a yellow folder.

2. 2
   noun

   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.

   My essays are in the folder named "Schoolwork".

3. 3
   noun

   A folding knife, typically a pocketknife.

   A funny name for a knife, the Needs Work folder is purpose-built as a working folder, and includes a straight, plain-edge, modified-wharncliffe blade, and a comfortable, ergonomic handle.

4. 4
   noun

   covering that is folded over to protect the contents

5. 5
   noun

   a small book usually having a paper cover

6. 6
   noun

   A machine or person that folds things.

Etymology

From fold + -er.