# USB

/ˈjuˈɛsˈbi/ (US)

Source: https://englishreference.com/word/usb
Updated: 2026-08-08

## Senses

### 2. flash drive

noun · CEFR A2 · Informal

A small device that you plug into a computer to store or move files.

For teachers: A portable flash memory storage device that connects via a built-in plug. Often used metonymically to refer to the physical drive itself.

- I saved the presentation on a USB so I could show it in class.
- Before reformatting the hard drive, ensure you have backed up all critical documents onto an external USB or cloud storage.

Usage: In informal speech, people often drop 'drive' or 'stick' and just say 'a USB'.

Teaching tip: While technically an abbreviation for the bus standard, in casual English it is very common to hear this used as a countable noun for the storage device.

## Examples

- I need to plug my phone into the USB port.
- The technician suggested using a USB cable to transfer the large video files directly to the external drive.
- While wireless standards have become more prevalent, the reliability and speed of a physical USB connection remain essential for high-fidelity audio interfaces and professional data management.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.